1. |
- Jonsson, Ing-Marie, 1960-
(author)
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Social and Emotional Characteristics of Speech-based In-Vehicle Information Systems : Impact on Attitude and Driving Behaviour
- 2009
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Doctoral thesis (other academic/artistic)abstract
- Modern vehicles use advanced information systems in vehicles to provide and control a wide variety of functions and features. Even modest vehicles today are equipped with systems that control diverse functions from air-conditioning to high quality audio/video systems.Since driving requires the use of eyes and hands, voice interaction has become more widely used by in-vehicle systems. Due to the technical complexity involved in voice recognition, focus has been on issues of speech ecognition. Speech generation is comparatively simple, but what effect does the choice of voice have on the driver? We know from human-human interaction that social cues of the voice itself influence attitude and interpretation of information. Introducing speech based communication with the car changes the relationship between driver and vehicle. So, for in-vehicle information systems, does the spoken voice matter?The work presented in this thesis studies the effects of the voice used by invehicle systems. A series of studies were used to answer the following questions: Do the characteristics of voices used by an in-vehicle system affect driver’s attitude? Do the characteristics of voice used by an in-vehicle system affect driver’s performance? Are social reactions to voice communication the same in the car environment as in the office environment?Results show that voices do matter! Voices trigger social and emotional effects that impact both attitude and driving performance. Moreover, there is not one effective voice that works for all drivers. Therefore an in-vehicle system that knows its driver and possibly adapts to its driver can be the most effective. Finally, an interesting observation from these studies is that social reactions to voice communication in the car are different than in the office, Similarity attraction, an otherwise solid finding in social science, did not hold all studies. It is hypothesized that this difference can be related to the different kinds of task demands when driving a car or working in an office environment.
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2. |
- Sundström, Johan, Professor, 1971-, et al.
(author)
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Risk factors for subarachnoid haemorrhage : a nationwide cohort of 950 000 adults
- 2019
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In: International Journal of Epidemiology. - : Oxford University Press. - 0300-5771 .- 1464-3685. ; 48:6, s. 2018-2025
-
Journal article (peer-reviewed)abstract
- BACKGROUND: Subarachnoid haemorrhage (SAH) is a devastating disease, with high mortality rate and substantial disability among survivors. Its causes are poorly understood. We aimed to investigate risk factors for SAH using a novel nationwide cohort consortium.METHODS: We obtained individual participant data of 949 683 persons (330 334 women) between 25 and 90 years old, with no history of SAH at baseline, from 21 population-based cohorts. Outcomes were obtained from the Swedish Patient and Causes of Death Registries.RESULTS: During 13 704 959 person-years of follow-up, 2659 cases of first-ever fatal or non-fatal SAH occurred, with an age-standardized incidence rate of 9.0 [95% confidence interval (CI) (7.4-10.6)/100 000 person-years] in men and 13.8 [(11.4-16.2)/100 000 person-years] in women. The incidence rate increased exponentially with higher age. In multivariable-adjusted Poisson models, marked sex interactions for current smoking and body mass index (BMI) were observed. Current smoking conferred a rate ratio (RR) of 2.24 (95% CI 1.95-2.57) in women and 1.62 (1.47-1.79) in men. One standard deviation higher BMI was associated with an RR of 0.86 (0.81-0.92) in women and 1.02 (0.96-1.08) in men. Higher blood pressure and lower education level were also associated with higher risk of SAH.CONCLUSIONS: The risk of SAH is 45% higher in women than in men, with substantial sex differences in risk factor strengths. In particular, a markedly stronger adverse effect of smoking in women may motivate targeted public health initiatives.
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3. |
- Barros, Guilherme, 1992-
(author)
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Estimation of hazard ratios from observational data with applications related to stroke
- 2024
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Doctoral thesis (other academic/artistic)abstract
- The objective of this thesis is to examine some challenges that may emerge when conducting time-to-event studies based on observational data. Time-to-event (also called survival) is a setting that involves analyzing how different factors may influence the length of time until an individual experiences the event of interest. This type of analysis is commonly applied in fields such as medical research and epidemiology. In this thesis, which focuses on stroke, we are interested in the time to a recurrent stroke or the death of a patient who survived a first stroke.Hazard ratios are one of the main parameters estimated in time-to-event studies. Hazard ratios involve comparing the risk of experiencing the event between two groups, usually a treated group and an untreated group. They can also involve other factors, such as different age groups. Hazard ratios can be estimated from the data by using the Cox regression model.Observational data, in contrast to experimental data, involves data collected without any intervention or random assignment of treatment to the individuals. Confounders, that is, variables that distort or obscure the true relationship between treatment and outcome, are always present and need to be controlled for in observational studies.National registers are an important source of observational data. A national registry is a centralized database or system that collects, stores, and maintains information about a specific population or group of individuals within a country. Sweden is known for its detailed and complete national registers. In this thesis, data from the Swedish Stroke Register (Riksstroke) is used to study factors related to stroke.In time-to-event studies involving observational data, several challenges may arise for the researcher during data analysis. Some individuals may not experience the event during the observation period and thus the information about their time until the event is incomplete. These individuals are considered as censored. Some individuals may experience another event rather than the one of interest, a competing risk. Additionally, models must be properly constructed, with researchers selecting variables and determining the suitable functional form.Four papers are included in the thesis. Paper I demonstrates how to handle competing risks in survival analysis. The study involves comparing individuals with and without standard modifiable risk factors and their risks of a recurrent stroke or death using data from the Swedish Stroke Register.The estimation of marginal hazard ratios is a common theme in the other three papers. All involve simulation studies in order to extend methods and explore best practices when estimating marginal hazard ratios.Paper II explores non-parametric methods that can be used as alternatives to more traditional parametric methods when balancing datasets in order to estimate a marginal hazard ratio. A case study was also conducted using data from the Swedish Stroke Register involving the prescription of anticoagulants at hospital discharge after a stroke.Paper III is about how censoring affects marginal hazard ratio estimation, even with perfect balancing of the dataset. We study this issue, taking into consideration varying effect sizes and censoring rates. A procedure to attenuate the problem is also studied.Paper IV concerns covariate selection in the case of high-dimensional data. High-dimensional data involves cases in which the number of covariates in the study is comparable to the number of individuals, and therefore covariate selection methods are needed. In the paper, we explore some of these methods and suggest a best-performing procedure. As Paper II, Paper IV involves a case study of anticoagulant prescription using data from the Swedish Stroke Register.
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4. |
- Beer, Torfinn, 1992-
(author)
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An epidemiological perspective on heart and lung weight in cardiac and intoxication deaths
- 2022
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Doctoral thesis (other academic/artistic)abstract
- The main purpose of a medico-legal autopsy is to determine the cause and manner of death. A forensic pathologist makes assessments of this using several sources of information, one of which is the discrepancy between measured organ weight and reference values. Of particular interest is the heart weight in heart disease and the weight of the lungs in fatal intoxications. In this thesis, a linear model of lung weight was created, but the model could at best explain only 13% of the variation in combined lung weight (Paper I). Unsurprisingly, this meant that the model was a poor definition of “normal” lung weight and could not be used to identify intoxication cases (Paper II). A ratio of lung weight to heart weight (LWHW ratio) also failed to differentiate intoxication cases from controls. The poor performance of these methods could plausibly have been due to fatal intoxications with only some substances being associated with increased lung weight, but an analysis showed that many common intoxicants were associated with heavier lungs than hanging deaths (Paper III). To establish heart weight references more applicable in a medico-legal autopsy population, a model of heart weight accounting for undiagnosed cardiac hypertrophy was created (Paper IV). The model showed that for a decedent of average the evidence that a was hypertrophic reached, substantial support at around 470 g.In conclusion, a definition of “heavy lungs” remains elusive. However, it seems to be a finding compatible with fatal intoxications with many substances and the low predictive value found may be due to study design. The heart weight model presented allows pathologists to assess the evidence of cardiac hypertrophy more easily than previously published models.
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5. |
- Darehed, David, 1986-
(author)
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The impact of organizational and temporal factors on acute stroke care in Sweden
- 2020
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Doctoral thesis (other academic/artistic)abstract
- Background: Acute stroke carries a high risk of morbidity and death, but early treatment can improve outcomes. Intravenous stroke thrombolysis (IVT) is one such treatment, it is however time-sensitive and show better outcomes the sooner it is given. Most studies on time to IVT so far have looked at fixed time-intervals, and studies of short delays in clinical practice are relatively scarce. Another well-established treatment is managing acute stroke patients in stroke units (SU). Admission rates to a SU as first destination of hospital care have improved over time in Sweden. In the past decade however, the rates have leveled out at around 75-80% without further improvement. A hypothesis is that in-hospital overcrowding contributes. Previous studies have shown that outcomes after stroke differ between hospital types, and also vary depending on time of admission, with higher mortality seen for off-hours, weekend and winter admissions. The reasons behind temporal variations are not fully understood, but it has been proposed that environmental, patient-related and organizational factors contribute. The overall aim of this thesis was to study the effect of organizational factors on quality of care and outcomes after stroke, primarily focusing on the role of in-hospital overcrowding, in-hospital time to IVT and time of admission, while also studying differences between hospitals.Methods: All papers in this thesis were based on data from the Swedish stroke register (Riksstroke), a national quality register that holds data on patient related factors, acute care and outcomes. Paper I included 13,955 patient admissions from 14 hospitals in Region Norrbotten and Region Skåne from 2011-2014, enriched with data on in-hospital bed occupancy. Papers II-IV included all 72 Swedish hospitals caring for patients with acute stroke. Paper II included data from 2011-2015 (N=113,862), paper III from 2011-2016 (N=132,744) and paper IV from 2010-2017 (N=14,132). Analyses included descriptive statistics, unadjusted analyses and multivariable adjusted analyses.Results: We found that each percent increase in in-hospital bed occupancy above 85% decreased admission rates to a SU as first destination of hospital care by 1.5% (odds ratio (OR) 0.985, 95% confidence interval (CI) 0.978-0.992), with significant differences between hospitals. Admission rates were also lower off-hours, compared to on-hours (OR 0.73, 95% CI 0.70-0.75). Over time, admission rates to a SU as first destination of hospital care decreased in university hospitals, while they increased in specialized non-university hospitals and community hospitals. Each minute delay in door-to-needle time (DNT) decreased the odds of 90-day survival by 0.6% (OR 0.994, 95% CI 0.992-0.996), increased the odds of ICH within 36 hours by 0.3% (OR 1.003, 95% CI 1.000-1.006), and led to significantly higher odds of a worsening in functional outcomes at 3 months by 0.3-0.4%. DNT within 30 minutes was most likely daytime, and varied between hospital types. 90-day survival was lowest for patients admitted in January (81.5%), and highest for those admitted in May (84.1%) (OR 1.28, 95% CI 1.17-1.40).Conclusion: We found that in-hospital overcrowding decrease admission rates to a SU as first destination of hospital care, and that even short delays in DNT decreases survival, increases ICH complications and leads to a worsening in functional outcomes in routine clinical practice. We also found that quality of care varied depending on time of admission and between hospitals, indicating unequal care. Organizational differences should be accessible through quality improvement efforts aiming to implement robust local guidelines for in-hospital stroke treatment.
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6. |
- Eriksson, Marie, 1970-
(author)
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Aspects on stroke outcome : survival, functional status, depression and sex differences in Riks-Stroke, the National Quality Register for Stroke Care
- 2008
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Doctoral thesis (other academic/artistic)abstract
- Stroke is a major cause of death and disability worldwide. In Sweden, about 30 000 strokes occur each year. The aim of this thesis was to analyse survival, functional outcome and self-reported depression after stroke, and to explore possible differences between men and women in stroke care and outcome. These studies were based on Riks-Stroke, the Swedish national quality register for stroke care. Information on background variables and treatment were collected during the hospital stay. The patient’s situation and outcome after stroke were followed-up after 3 months. Long term survival was retrieved from the Swedish Population Register (Folkbokföringen). Possible sex-differences in stroke care and outcome 3 months after stroke were explored in 24 633 strokes, registered during 2006. In conscious patients, the proportions treated at stroke units were similar for men and women. Men and women had equal chance to receive thrombolytic therapy or secondary prevention with oral anticoagulants. Compared to men, women were less likely to develop pneumonia, but more likely to experience deep venous thromboses and fractures during hospital stay. Women had worse 3-month survival and functional outcome, differences that were explained by their higher age and impaired level of consciousness on admission. Women felt more depressed and perceived their health as worse than men did. Women were also less satisfied with the care they had received in the hospital. The agreement between self-reported functional outcome 3 months after stroke and the commonly used modified Rankin Scale (mRS) was explored in 555 stroke survivors from 4 hospitals during May-September 2005. Riks-Stroke’s self-reported questions classified 76% of the patients into correct mRS grade. The association between functional outcome 3 months after stroke and 3-year survival was assessed in 15 959 men and women who had had a stroke during 2001-2002. Patients with estimated mRS grades 3, 4 and 5 had hazard ratios for death of 1.7, 2.5 and 3.8, respectively, as compared with patients with lower grades, 0-2. Depressed mood, male sex, high age, diabetes, smoking, antihypertensive therapy at onset and atrial fibrillation were also identified as predictors of poor survival. Self-reported depression 3 months after stroke and use of antidepressants were analysed in 15 747 stroke survivors from 2002. Fourteen percent felt depressed 3 months after stroke. Female sex, age <65, previous stroke, living alone or in institution, or being dependent in activities of daily living (ADL) were factors associated with self-reported depression. At the follow-up, 22% of the men and 28% of the women were using antidepressant medication, which were approximately twice as many as in the general population. Still, 8% of all patients in Riks-Stroke reported depressive mood but no treatment with antidepressants. In conclusion, men and women with stroke in Sweden experience similar treatment and outcome in most aspects. Patient-reported functional outcome can be reliably transformed to a standard disability scale. Impaired functional outcome three months after stroke is an independent predictor of poor long-term survival. Depressive mood is common after stroke and is associated with poor survival and impaired functional outcome.
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7. |
- Flinkfeldt, Marie, 1982-
(author)
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Legitimacy Work : Managing Sick Leave Legitimacy in Interaction
- 2016
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Doctoral thesis (other academic/artistic)abstract
- This thesis studies how sick leave legitimacy is managed in interaction and develops an empirically driven conceptualization of ‘legitimacy work’. The thesis applies an ethnomethodological framework that draws on conversation analysis, discursive psychology, and membership categorization analysis. Naturally occurring interaction is examined in two settings: (1) multi-party meetings at the Swedish Social Insurance Agency, in which participants assess and discuss the ‘status’ of the sick leave and plan for work rehabilitation; (2) peer-based online text-in-interaction in a Swedish forum thread that gathers people on sick leave.The thesis shows how mental states, activities and alternative categories function as resources for legitimacy work. However, such invocations are no straight-forward matter, but impose additional contingencies. It is thus crucial how they are invoked. By detailed analyses of the interaction, with attention to aspects such as lexicality and delivery, the thesis identifies a range of discursive features that manage sick leave legitimacy. Deployed resources are also subtle enough to be deniable as legitimacy work, that is, they also manage the risk of an utterance being seen as invested or biased.While legitimate sick leave is a core concern for Swedish policy-making, administration, and public debate on sick leave, previous research has for the most part been explanatory in orientation, minding legitimacy rather than studying it in its own right. By providing detailed knowledge about the legitimacy work that people on long-term sick leave do as part of both institutional and mundane encounters, the thesis contributes not only new empirical knowledge, but a new kind of empirical knowledge, shedding light on how the complexities of sick leave play out in real-life situations.Traditional sociological approaches have to a significant extent treated legitimacy as an entity with beginnings and ends that in more or less direct ways relate to external norms and cognitive states, or that focus on institutions, authority or government. By contrast, the herein emerging concept ‘legitimacy work’ understands legitimacy as a locally contingent practicality – a collaborative categorially oriented accomplishment that is integral to the interactional situation.
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8. |
- Gimbler Berglund, Ingalill
(author)
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Developing guidelines in nursing care of children with Autism Spectrum Disorder in high technology health care settings
- 2017
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Doctoral thesis (other academic/artistic)abstract
- Introduction. The high technology environment such as a radiology and anaesthesia department in a typical health care setting can many times be a frightening environment for children. Children with neurodevelopmental disorders, such as Autism Spectrum Disorder (ASD), have problems with communication and social interaction. They are dependent on routines and can have higher sensitivity to sensory stimuli than other children. These children are one group who constitutes special challenges in reducing anxiety and creating participation in a high technology environment. This can make them prone to frightening encounters in health care settings if not cared for with special consideration.Aim: The overall aim of this thesis was to audit and enhance the care of children in a high technology environment in the health care system with a focus on children with Autism Spectrum Disorder.Methods: A descriptive design was used with both qualitative and quantitative methods. In Study I, 32 nurse anaesthetists were interviewed to explore the actions and experiences of caring for children in a high technology environment using a qualitative method, known as the Critical Incident Technique (CIT). In the two following studies (Study II, III) a cross-sectional design was used and two national surveys were performed to obtain knowledge on the status in Sweden regarding the care of children with ASD in high technology environments. Sixty-eight anaesthesia departments, 38 paediatric departments and 86 radiology departments responded to the survey. Descriptive statistic was used for the answers apart from the comments part of the questionnaire where qualitative content analysis was used. Due to the limited existence of guidelines in these environments, the creation ofevidence-based guidelines was performed in Study IV, using a Delphi method. The Delphi study was based on information gleaned from the previous studies and from the literature, and 21 experts identified in Study II and III were the expert panel developing the guidelines.Result: Nurses identified children with special needs such as children with ASD as a vulnerable group in a high technology environment (Study I). Seven departments in the anaesthesia context had guidelines for caring for children with ASD in the perioperative context. In the other departments, the care of children with ASD was dependent on the knowledge of the nurse presently working there (Study II). None of the radiology departments in Sweden had guidelines on how to care for children with ASD going through a radiographic examination without anaesthesia (Study III). As a result of Study I, II and III, the need for structured guidelines for caring for children with ASD in a high technology context was identified and a set of guidelines and a checklist was created. The guidelines relate to the organisational structure for the care of children with deficits in social interaction, communication, sensory sensitivity and dependence on routines. The checklist relates to gleaning information about the specific child to be able to give person-centred care based on the specific characteristic of the child (Study IV).Conclusion: Nurses working in a high technology environment in health care have diverse experiences of preventing anxiety in children with ASD coming for a challenging procedure. There are a limited number of evidence-based guidelines to decrease anxiety and to create participation in this group ofchildren. Evidence-based guidelines were created as a tool for enhancing person-centred care in a high technology environment for this group of children. The fact that several problems are assembled under one disorder makes ASD a useful condition to have as a basis for formulating national guidelines. Guidelines that cater for the care of children with ASD in a high technology environment using a person-centred approach may also extend to the care for children with other neurodevelopmental disorders that exhibit some of the same problems as children with ASD.
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9. |
- Björk, Marie, 1963-
(author)
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Att främja elevers teoretiska utforskande av bassystemet : En undervisningsutvecklande studie i matematik på mellanstadiet
- 2023
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Licentiate thesis (other academic/artistic)abstract
- Den här licentiatuppsatsen handlar om hur en undervisning kan främja elevers förståelse av tiobassystemet genom att de bjuds in till en undervisning där de kan delta i ett kollektivt utforskande av bassystemet, som en övergripande nivå av tiobassystemet. Syftet är att exemplifiera och diskutera hur en undervisning, som främjar elevernas möjligheter att utveckla ett tänkande om tiobassystemet på en generell eller övergripande nivå, kan utformas. Vidare är syftet att studera vad i en undervisning, designad enligt principerna för lärandeverksamhet, som kan förstås som förebyggande i specialpedagogisk mening.Studien bygger på resultatet av två artiklar med följande frågeställningar: 1) Vilka aspekter i uppgifternas utformning och genomförande främjar elevers möjligheter att pröva relationen mellan olika bastal och övergång till successivt större respektive mindre talenheter? 2) Vad i elevernas resonemang och arbete med speciellt designade uppgifter kan ses som tecken på teoretiskt tänkande om bassystemet?Learning study har använts som forskningsramverk och genererat data för uppsatsens två artiklar. Learning studyn genomfördes i årskurs 4, tillsammans med tre matematiklärare. Design och analys är inspirerad av El’konins och Davydovs matematiska program och några principer från lärandeverksamhet. Analysen i de bägge artiklarna är genomförd med stöd av teoretiska principer för lärandeverksamhet. Datamaterialet består av videoinspelningar från tre lektioner (totalt cirka 420 minuter), transkriptioner och datasammanställningar av uppgifter, transkriptioner och anteckningar från utvärderingarna i det iterativa arbetet med lektionerna.Resultatet består av tre aspekter som behöver synliggöras genom uppgifternas utformning och genomförande för att eleverna ska kunna arbeta teoretiskt med bassystemets struktur: (1) Bastalet, (2) Tal som mätetal, och (3) Talenheternas representationer. Eleverna behöver urskilja aspekterna för att kunna identifiera att det fattas en lämplig talenhet och för att kunna pröva och reflektera över relationen mellan bastalet och övergången till successivt större respektive mindre talenheter i olika baser. Resultatet består också av ett antal exempel på tecken på teoretiskt tänkande inom tre identifierade kategorier: 1) basens funktion för det värde som siffrorna anger i talet, 2) positionsväxling, och (3 entalet som ett av en kvantitet. I analysen har Davydovs definition av teoretiskt tänkande, som något som kan komma till uttryck i form av teoretisk reflektion, analys och planering samt reproduktion av grundläggande principer för ett specifikt ämnesinnehåll, använts.Resultatet ger ett bidrag till den matematikdidaktiska forskningen och till den specialpedagogiska forskningen med inriktning mot matematik genom beskrivningar av de tre aspekterna och av tecken på teoretiskt tänkande. Vidare kan beskrivningarna av uppgifternas utformning och genomförande användas i undervisning och i fortsatta studier.I diskussionen behandlas hur en undervisning kan utformas som främjar elevernas möjligheter att utveckla ett teoretiskt tänkande om bassystemet. Diskussionen behandlar också vad i en undervisning designad enligt principerna för lärandeverksamhet som kan förstås som förebyggande i specialpedagogisk mening genom att skapa möjligheter för elever att redan tidigt i grundskolan kollektivt utforska och förstå hela positionssystemet som en struktur. Slutligen diskuteras implikationer för specialundervisning och studiens bidrag.
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10. |
- Byhamre, Marja Lisa, 1981-
(author)
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Snus use and mortality : associations, potential mechanisms, and socioeconomic aspects
- 2022
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Doctoral thesis (other academic/artistic)abstract
- Snus is a smokeless tobacco product made of a moist powder of ground tobacco. It is used mainly in the Nordic countries, although increasingly popular internationally. The Swedish snus tradition dates back to the seventeenth century, and it is now used daily by about 23% of the male and 6% of the female population. Snus contains high levels of nicotine as well as carcinogenic substances and microorganisms that could potentially cause adverse health effects. The physiological effects of snus use include acutely raised blood pressure and heart rate, and increased cardiac oxygen demand, while the psychological response results in alertness and anxiety reduction. The high nicotine content causes rapid onset of addiction. Previous research on snus use and health is largely inconclusive, but indicates increased risks of all-cause, cardiovascular and cancer mortality. This thesis aimed to further investigate the health effects of snus use, with a focus on mortality, potential underlying mechanisms, and the impact of socioeconomic factors. Four original papers form the base of this thesis. The first study was performed on a pooled dataset of eight Swedish cohorts (The Swedish Collaboration on Health Effects of Snus use), including over 169 000 men. We found an increased risk of all-cause (HR 1.28, 95% CI 1.20; 1.35), cardiovascular, and other cause mortality, and indications of raised cancer mortality. The second study was set within an interventional program in northern Sweden (Västerbotten Intervention Programme) and included 46 000 men and women. It showed increased mortality overall (estimates similar to first study), from cardiovascular diseases, and external causes (e.g., accidents and suicide) that remained after controlling for socioeconomic status. We found these associations in groups of varying socioeconomic background (e.g., both basic education and high-income groups), suggesting that increased mortality risks among snus users are not restricted to certain socioeconomic groups. Studies three and four investigated potential underlying mechanisms that might contribute to increased mortality among snus users, including established cardiometabolic risk factors in study three (the metabolic syndrome and its components: obesity, hypertension, type 2-diabetes and abnormal blood lipids) and more novel risk factors in study four (low-grade inflammation, low vitamin D-concentrations, and altered iii testosterone levels). The analytical samples were drawn from a long- term follow-up study of around 900 16-year-olds in a municipality in northern Sweden (Northern Sweden Cohort, study three) and more than 6 000 participants in another population-based cohort (the Northern Sweden MONICA study, study four). We found no associations between snus use and established cardiometabolic risk factors, but there was evidence of lower concentrations of inflammatory and vitamin D-status biomarkers in both men and women, and higher testosterone concentrations in men who were currently using snus. We conclude that snus use is associated with increased all-cause and cardiovascular mortality, and to death by other causes, that may be restricted to external causes. Cancer mortality may also be increased among snus users. The associations cannot be fully explained by differences in socioeconomic status among snus users and non-users. Established cardiometabolic risk factors do not seem to be the main mechanisms behind these associations. Lower inflammatory biomarker levels among snus users may serve as a protective factor, while lower vitamin D-concentrations and increased testosterone levels may be part of an underlying mechanism linking snus use to increased mortality. Future research should focus on the health consequences of snus use among women, on other possible links between snus use and death, and on mortality in different cancers among users of snus. The health consequences of dual use of snus and cigarettes should also be assessed.
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11. |
- Eriksson, Maria A., 1965-, et al.
(author)
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Leptin levels are not affected by enalapril treatment after an uncomplicated myocardial infarction, but associate strongly with changes in fibrinolytic variables in men
- 2020
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In: Scandinavian Journal of Clinical and Laboratory Investigation. - : Taylor & Francis. - 0036-5513 .- 1502-7686. ; 80:4, s. 303-308
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Journal article (peer-reviewed)abstract
- Leptin, an adipocyte-derived hormone, is involved in the regulation of body weight and is associated with obesity-related complications, notably cardiovascular disease (CVD). A putative link between obesity and CVD could be induction of plasminogen activator inhibitor-1 (PAI-1) synthesis by leptin. In this study, we hypothesized that the beneficial effect of the angiotensin-converting enzyme inhibitor (ACE(i)) enalapril on PAI-1 levels is mediated by effects on leptin levels. The association between leptin and components of the fibrinolytic system was evaluated in a non-prespecified post hoc analysis of a placebo-controlled randomized, double-blind trial where the effect of the ACE(i) enalapril on fibrinolysis was tested. A total of 46 men and 37 women were randomized to treatment with enalapril or placebo after (median 12 months) an uncomplicated myocardial infarction. At baseline, the participants were stable and had no signs of congestive heart failure. Leptin and fibrinolytic variables (mass concentrations of PAI-1, tissue plasminogen activator (tPA) and tPA-PAI complex) were measured at baseline, and after 10 days, 6 months and 12 months. Enalapril treatment did not change leptin levels, which increased significantly during 1 year of follow-up (p = .007). Changes in leptin levels were strongly associated with changes of tPA mass (p = .001), tPA-PAI complex (p = .003) and of PAI-1 (p = .006) in men, but not in women. Leptin levels are not influenced by treatment with an ACE(i). In contrast, leptin associates strongly with changes in fibrinolytic variables notably with a sex difference, which could be of importance for obesity-related CVD.
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12. |
- Eriksson, Monica, 1960-
(author)
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Recovery from an Acute Myocardial Infarction : A Longitudinal Study of Couples
- 2010
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Doctoral thesis (other academic/artistic)abstract
- The overall aim of this thesis was to investigate recovery in the relationshipbetween couples following an acute myocardial infarction [AMI]. An additionalaim was to compare differences over time regarding hope and health‐relatedquality of life [HRQoL] for both patient and partner. The thesis is based on fourempirical studies (I‐IV), and has a longitudinal design employing both qualitativeand quantitative methods. A purposive sample was recruited comprising 15couples in which one partner had been diagnosed with an AMI. Study I wascarried out as individual tape‐recorded interviews aimed at describing thepatient´s and their partner´s experiences after hospital discharge. Study II alsoused individual tape‐recorded interviews, this time with the aim of describing andinterpreting the couple´s thoughts and expectations about their future life after thepatients’ discharge. Study III used the HHI‐S and SF‐36 measures to comparechanges over time in self‐rated hope and health‐related quality of life, anddifferences between patients’ ratings and their partner´s. Study IV used repeatedindividual tape‐recorded interviews with the aim of interpreting the couples´narratives about their relationship and daily life. The data were analysed andinterpreted using a number of qualitative content analysis methods (I, II, IV) anddescriptive and comparative statistics (III).Overall, the couples´ recovery from an AMI in the two years after an AMI consisted of a striving to reach some kind of balance and stability in their currentlife situation. The period after discharge from the hospital involved understandingthe importance of the home as a place in which one feels at home and which bringsa feeling of safety, experiencing the phenomenon of security and being at homewithin oneself, and seeking normalisation in returning to an ordinary life (I). Thecouples´ thoughts about their future lives were either optimistic, taking an activeapproach, or pessimistic, taking a wait‐and‐see approach. The couples could bedivided into four positions in terms of their visions of the future: life companions,who were in concordance regarding their future; tightrope walkers, who had incommon a need to reprioritise what they considered important in their future;pathfinders, who had in common an undefined vision of their future and observers, who saw their future including both physical as well as sociallimitations (II). Self‐rated hope and HRQoL both improved over time, but few ofthese improvements were statistically significant, and I found no statistically groupeffects. Estimation of the MDC index revealed that neither HHI‐S nor SF‐36measures stable traits (III). Finally, the repeated interviews revealed how thecouples viewed their daily life, mutual relationships and roles in their relationshipVIIover time. There was an abundant variation in a number of the couples´ storiesabout their relationship and daily life during the recovery period (IV).In conclusion, it is clear that what happen to one party in a relationship influencesthe other party. The couples in the studies showed improvements in both hope andhealth‐related quality of life over time. The HHI‐S and SF‐36 measures seemed tobe sensitive to and affected by the current situation. Going through an AMI is alife‐changing event that makes it necessary for the couple to make adjustments andadapt to their new situation. Different couples have different approaches tohandling this situation; no two couples are the same, and every couple willperceive and deal with the AMI differently. An AMI starts a process of transition,and over time a couple affected by AMI will undergo external as well as internal changes.
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13. |
- Eriksson, Mimmi, 1986-
(author)
-
Super liquid-repellent surfaces - interactions and gas capillaries
- 2020
-
Doctoral thesis (other academic/artistic)abstract
- Super liquid-repellent surfaces have attracted a lot of interest in recent years. In addition to the large scientific interest there are many potential technological applications ranging from self-cleaning materials to microfluidic devices. In this thesis, interactions between liquid-repellent surfaces in liquids were studied, with the aim to investigate the detailed mechanisms of super liquid-repellence, such as superhydrophobicity and superamphiphobicity. An atomic force microscope (AFM) was used to measure the interaction forces between super liquid-repellent surfaces and a microsphere in different liquids. Additionally, a setup combining AFM with laser scanning confocal microscopy (LSCM) was used, which enabled simultaneous imaging in order to capture the microscopic events between the sphere and the surface during a force measurement. The confocal images successfully visualized how the strongly attractive forces measured between liquid-repellent surfaces are due to the formation of a gaseous capillary bridge between the two surfaces. Similar long-ranged forces with capillary formation and growth were observed both in water and in lower surface tension liquids. Additionally, the confocal images enabled determination of the capillary shape and volume, and the data showed an increase of the capillary volume during the major part of the process of separating the surfaces. A gaseous layer underneath the liquid at super liquid-repellent surfaces was also visualized with LSCM, and it was concluded that this gaseous layer is responsible for the formation and growth of large gas capillaries. It was found that an increased amount of available gas in the gaseous layer influenced the interactions and allowed the capillary to grow larger during separation. Further, theoretical calculations based on the size and shape of the capillary suggested that a small under pressure in the capillary drives the gas to flow from the gaseous surface layer into the capillary, facilitating growth during separation.
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14. |
- Hägg, David, 1984-
(author)
-
Psoriasis in Sweden : observational studies from an epidemiological perspective
- 2016
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Doctoral thesis (other academic/artistic)abstract
- Background: Psoriasis is a heterogeneous disease with several clinical manifestations; the symptoms are characterized by redness, scaliness and thickness of the skin. There are several treatment options available for psoriasis and patients with moderate to severe psoriasis generally need systemic agents. In 2004 biologics were introduced for patients with moderate to severe psoriasis in Sweden.Methods: The Swedish Health Care Registers and the Swedish registry for systemic treatment of psoriasis PsoReg, were used to; estimate the incidence of psoriasis cases in the Swedish specialist care, to examine the treatment allocation and important factors related to the initiation of especially biologic treatment.Results: On average 9000 new psoriasis patients entered specialist care in Sweden each year under study, corresponding to an incidence of 98 patients per 100,000 person-years. In the treatment allocation analysis of the incident psoriasis cases in the Swedish specialist care Patients living in a Metropolitan Area and with a University degree were more likely to initiate a biologic treatment. By analysing biologic-naïve patients enrolled in PsoReg, PASI (the physician’s assessment of the psoriasis severity) and Psoriasis Arthropathy were shown to be two important factors associated with the initiation of biologic treatment while sex was not. Furthermore, it was also shown that the decision to initiate biological treatment was more strongly associated with PASI than with DLQI (the patients’ assessment of the disease impact Quality of Life).Conclusion: These studies indicate that there are inequalities in the assignments of systemic psoriasis treatments (especially in biologic treatment). Since the allocation of treatments should not depend on sex, education or residency in a Metropolitan Area but rather the need of care, it is important that future studies continue analysing possible factors that could influence the initiation of treatment in clinical practice.
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15. |
- Johansson, Cecilia, 1988-
(author)
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Risk markers and incidence of atrial fibrillation in northern Sweden
- 2023
-
Doctoral thesis (other academic/artistic)abstract
- Background: Atrial fibrillation (AF) is the most common clinically significant arrythmia with a prevalence of approximately 3% in the general population. Less is known about the incidence of AF. In order to reduce the incidence of AF, it is of essence to identify modifiable risk factors for the disease.Aims: The aims of this thesis were (1) to estimate the incidence of AF and to assess the prevalence of provoking factors and risk factors for stroke and systemic embolism at the time of AF diagnosis, (2) to study the association between alcohol consumption and risk of AF, (3) to study the association between weight, height, weight change, and risk of AF, and (4) to study the association between normal or high normal blood pressure (BP), compared to optimal BP, and risk of AF.Methods: To determine the incidence of AF and the prevalence of provoking factors and risk factors for stroke and systemic embolism at AF diagnosis, an observational study was performed between January 1, 2011, and December 31, 2012, in the municipalities of Skellefteå and Norsjö, Västerbotten, Sweden. Diagnosis registries were searched for cases of incident AF. All AF diagnoses were verified by electrocardiogram. Data regarding provoking factors, type of AF and presence of risk factors for stroke and systemic embolism (as assessed by the CHA2DS2-VASc score) was obtained from medical records. Incidence was calculated by dividing the number of incident AF cases by the time at risk for the population.The association between alcohol consumption, weight, height, weight change, normal BP, high normal BP, and risk of AF was investigated in a population-based cohort study of participants of the Västerbotten Intervention Programme (VIP). Residents of Västerbotten County aged 30, 40, 50 and 60 years who had participated in the VIP health examinations between January 1, 1988, and September 5, 2014, were included. Individuals who had been diagnosed with AF before participating in the VIP were excluded. Study participants were followed until a diagnosis of AF, death, migration from the study area, or the end of the study on September 5, 2014. Incident AF cases were identified using the Swedish National Patient Registry. The health examinations included measurements of height and weight, systolic BP, diastolic BP, fasting glucose, oral glucose tolerance, and cholesterol. Participants also answered a questionnaire addressing any history of diabetes and myocardial infarction, alcohol use, education level, smoking habits, medications, and physical activity. Optimal BP was defined as BP < 120/80 mm Hg. Normal BP was defined as BP 120–129/80–84 mm Hg. High normal BP was defined as BP 130–139/85–89 mm Hg. Hypertension was defined as BP ≥ 140/90 mm Hg. Cox proportional hazards regression analysis was used to assess the associations between alcohol consumption, weight, height, weight change, normal BP, high normal BP, and risk of AF. These were performed with crude, age-adjusted, and multivariable models adjusted for other cardiovascular risk factors (age, sex, body mass index, hypertension, cholesterol, previous myocardial infarction, diabetes, problem drinking, smoking, education level, and leisure-time physical activity).Results: The incidence of AF was 4.0 cases of AF per 1000 person-years. In approximately one fifth of participants, a provoking factor was present at the first episode of AF. The CHA2DS2-VASc score was 2 or higher in 81% of participants. Permanent AF was the most common type of AF and was seen in about one third of the participants.When studying the association between alcohol consumption and risk of AF, 109,230 health examination participants were included in the study cohort and were followed for 1,484,547 person-years. During the study period, 5230 participants developed incident AF. Men with alcohol consumption in the highest quartile (≥ 4.83 standard drinks weekly) had a hazard ratio (HR) of 1.21 (95% confidence interval [CI] 1.09-1.34) for AF in a multivariable model when compared to men with an alcohol consumption in the lowest quartile (< 0.90 standard drinks weekly). In men, problem drinking was also associated with an increased risk of AF (HR 1.24, 95% CI 1.10–1.39 in a multivariable model). Among women, no significant association between alcohol consumption, problem drinking, and risk of AF was identified.In a fully adjusted model, height, weight, body mass index, and body surface area were positively associated with risk of incident AF. Among participants who underwent two health examinations 10 years apart, 1142 persons developed AF. The mean weight change from baseline was a weight gain of 4.8%. There was no significant association between either weight gain or weight loss and risk of AF.In the study of the association between normal BP, high normal BP, and risk of AF, 109,697 persons with a total of 162,982 health examinations were included. Incident AF was diagnosed in 5260 participants. There was an increased risk of incident AF in persons with normal BP (HR 1.11, 95% CI 1.01–1.27) and in persons with high normal BP (HR 1.23, 95% CI 1.10–1.38) compared to optimal BP in a multivariable model. Systolic BP and diastolic BP were associated with risk of incident AF, with HRs of 1.11 (95% CI 1.10–1.13) and 1.13 (95% CI 1.09–1.16) per 10 mmHg, respectively, in multivariable models. A restricted cubic spline analysis indicated a gradually increasing risk of AF with increasing systolic BP and diastolic BP.Conclusions: AF has an incidence of 4.0 per 1000 person-years. Alcohol consumption and problem drinking were associated with higher risk of AF in men, but not in women. Weight, height, body mass index, and body surface area were associated with increased risk of incident AF. Normal BP and high normal BP, when compared to optimal BP, were associated with increased risk of incident AF.
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16. |
- Lindmark, Anita, 1986-
(author)
-
Statistical methods for register based studies with applications to stroke
- 2016
-
Doctoral thesis (other academic/artistic)abstract
- This thesis adds to the area of register based research, with a particular focus on health care quality and (in)equality. Contributions are made to the areas of hospital performance benchmarking, mediation analysis, and regression when the outcome variable is limited, with applications related to Riksstroke (the Swedish stroke register).An important part of quality assurance is to identify, follow up, and understand the mechanisms of inequalities in outcome and/or care between different population groups. The first paper of the thesis uses Riksstroke data to investigate socioeconomic differences in survival during different time periods after stroke. The second paper focuses on differences in performance between hospitals, illustrating the diagnostic properties of a method for benchmarking hospital performance and highlighting the importance of balancing clinical relevance and the statistical evidence level used.Understanding the mechanisms behind observed differences is a complicated but important issue. In mediation analysis the goal is to investigate the causal mechanisms behind an effect by decomposing it into direct and indirect components. Estimation of direct and indirect effects relies on untestable assumptions and a mediation analysis should be accompanied by an analysis of how sensitive the results are to violations of these assumptions. The third paper proposes a sensitivity analysis method for mediation analysis based on binary probit regression. This is then applied to a mediation study based on Riksstroke data.Data registration is not always complete and sometimes data on a variable are unavailable above or below some value. This is referred to as censoring or truncation, depending on the extent to which data are missing. The final two papers of the thesis are concerned with the estimation of linear regression models for limited outcome variables. The fourth paper presents a software implementation of three semi-parametric estimators of truncated linear regression models. The fifth paper extends the sensitivity analysis method proposed in the third paper to continuous outcomes and mediators, and situations where the outcome is truncated or censored.
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17. |
- Nord, Andreas, professor, 1976-, et al.
(author)
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Språkhandledares gränsarbete : Dilemman i språkhandledning inom högre utbildning
- 2023
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In: Ämnesdidaktiska perspektiv på språk och litteratur. - Uppsala : Institutionen för nordiska språk, Uppsala universitet. - 1651-9132. - 9789198695045 - 9789198695052 ; , s. 159-182
-
Conference paper (peer-reviewed)abstract
- De flesta svenska lärosäten har i dag språkverkstäder med uppdraget att stötta studenterna i utvecklingen av akademiska språkliga praktiker. Trots att uppdraget har en stark koppling till universitetens kärnverksamheter utbildning och forskning organiseras verksamheterna i allmänhet i marginalen, inom ramen för service- eller stödfunktioner. I denna studie utforskas hur verksamma språkhandledare från språkverkstäder vid fyra lärosäten i kollegiala gruppsamtal talar om egna exempel från verksamheten, särskilt sådana som innebär professionella dilemman. Syftet är att synliggöra det ”gränsarbete” på olika nivåer som behöver utföras för att hantera yrkesutövandet genom att förhålla sitt eget handlande till andra intressenters handlande och förväntningar och verksamhetens underliggande villkor.Analysen visar att gränsarbete är centralt för språkhandledarnas professionella praktik, genom att många av de dilemman som deltagarna redogör för berör ansvarsrelationer och frågor om vad språkhandledaren ska göra – och inte göra – i relation till studenter, universitetslärare och i viss mån även i relation till organisatoriska förutsättningar. En vanlig gränsproblematik är t.ex. att behöva hantera att studenter kan utgå från en avvikande uppfattning om var gränserna går för vad språkhandledarna kan och ska bidra med än den språkhandledarna har. Till problematiken hör att möta förväntningar om att, som det uttrycks i materialet, ”rätta” eller ”fixa” texter.Resultaten relateras till tidigare forskning som diskuterat hur en s.k. autonom syn på litteracitet genomsyrar akademin och skapar en förståelse av litteracitet som individuell färdighet och språk som något som enkelt kan ”fixas”. Utifrån detta diskuteras hur språkverkstädernas marginaliserade position riskerar att bidra till att reproducera en sådan syn.
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18. |
- Ollila, Hanna M, et al.
(author)
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How do clinicians use post-COVID syndrome diagnosis? Analysis of clinical features in a Swedish COVID-19 cohort with 18 months’ follow-up : a national observational cohort and matched cohort study
- 2024
-
In: BMJ Public Health. - : BMJ Publishing Group Ltd. - 2753-4294. ; 2:1
-
Journal article (peer-reviewed)abstract
- Introduction: SARS-CoV-2 infection causes acute COVID-19 and may result in post-COVID syndrome (PCS). We aimed to investigate how clinicians diagnose PCS and identify associated clinical and demographic characteristics.Methods: We analysed multiregistry data of all SARS-CoV-2 test-positive individuals in Sweden (n=1 057 174) between 1 February 2020 and 25 May 2021. We described clinical characteristics that prompt PCS diagnosis in outpatient and inpatient settings. In total, there were 6389 individuals with a hospital inpatient or outpatient diagnosis for PCS. To understand symptomatology, we examined individuals diagnosed with PCS at least 3 months after COVID-19 onset (n=6389) and assessed factors associated with PCS diagnosis.Results: Mechanical ventilation correlated with PCS (OR 114.7, 95% CI 105.1 to 125.3) compared with no outpatient/inpatient contact during initial COVID-19. Dyspnoea (13.4%), malaise/fatigue (8%) and abnormal pulmonary diagnostic imaging findings (4.3%) were the most common features linked to PCS. We compared clinical features of PCS with matched controls (COVID-19 negative, n=23 795) and COVID-19 severity-matched patients (COVID-19 positive, n=25 556). Hypertension associated with PCS cohort (26.61%) than in COVID-19-negative (OR 17.16, 95% CI 15.23 to 19.3) and COVID-19-positive (OR 9.25, 95% CI 8.41 to 10.16) controls, although most individuals received this diagnosis before COVID-19. Dyspnoea was the second most common feature in the PCS cohort (17.2%), and new to the majority compared with COVID-19-negative (OR 54.16, 95% CI 42.86 to 68.45) and COVID-19-positive (OR 18.7, 95% CI 16.21 to 21.57) controls.Conclusions: Our findings highlight factors Swedish physicians associate with PCS.
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19. |
- Stiernman, Louise, 1994-
(author)
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Premenstrual dysphoric disorder : brain structure and function, GABAA-active neurosteroids and GABAA receptor plasticity
- 2024
-
Doctoral thesis (other academic/artistic)abstract
- Background Premenstrual dysphoric disorder (PMDD) is an ovarian hormone-bound disorder, characterized by mood symptoms which occur exclusively during the luteal phase of the menstrual cycle. Previous neuroimaging studies of PMDD have primarily reported functional brain differences during the luteal phase in regions of the salience network (SN), which is commonly implicated in mood and anxiety disorders. SN dysfunction may mediate affective and behavioral deficits by leading to enhanced detection and inappropriate assignment of salience to stimuli. What drives altered brain function in PMDD is unknown. However, one influential hypothesis implicates the luteal phase hormone progesterone, and in particular its neurosteroid metabolites. Progesterone-derived neurosteroids increase transmission at the g- aminobutyric acid type A (GABAA) receptor, leading to increased inhibitory tone at the neuronal level. This thesis aimed to i) investigate structural and functional characteristics of the brain in PMDD, ii) relate functional measures to levels of neurosteroids during the luteal phase, and iii) investigate how gene expression of GABAA receptor subunits is altered across the menstrual cycle in PMDD.Results In Study I, we found that women with PMDD had thinner cortices in widespread brain regions, including regions of the SN. In Studies II and III, we found that increases in functional brain measures are most prominent during the symptomatic luteal phase in regions belonging to the SN and in other networks commonly involved in the psychopathology of mood disorders. Furthermore, we could show that increased activity in key nodes of the SN was apparent in the follicular phase and related to the severity of affective symptoms experienced during the luteal phase. Additionally, in Study II, we found that functional activity in the amygdala, a key region of the SN, was differentially associated with serum levels of GABAA receptor- active neurosteroids between PMDD and controls during the luteal phase. Lastly, in Study IV, we found seminal evidence of reduced mRNA expression of the d-GABAA subunit, which imbues GABAA receptors with increased sensitivity to progesterone’s neurosteroid metabolites. Lower expression of d subunits was related to higher amygdala reactivity.Conclusion In this thesis, I provide evidence for altered structure and function in multiple brain networks, particularly the SN in PMDD. Accentuated SN dysfunction during the symptomatic luteal phase may be mediated by the amygdala, and related to abnormal deficits in the expression of neurosteroid-sensitive d- GABAA receptors in response to ovarian hormone fluctuations.
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20. |
- Sund, Fredrik, 1969-
(author)
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Cytomegalovirus Infection in Immunocompetent and Renal Transplant Patients : Clinical Aspects and T-cell Specific Immunity
- 2008
-
Doctoral thesis (other academic/artistic)abstract
- Cytomegalovirus (CMV) is a β-herpesvirus that, after primary infection, establishes a life-long persistence in the human host. Up to 90% of humans are infected with CMV, that is kept under control by CMV-specific CD8+ and CD4+ T cells. In patients with an impaired cellular immunity, however, CMV infections can be life-threatening. Thus, it is vital to identify risk factors and target high-risk patients. In this thesis we have evaluated low-dose valacyclovir prophylaxis in renal transplant patients and studied CMV-specific T cell immunity in healthy and renal transplant patients. In renal transplant patients, the CMV serostatus of both the recipient (R) and the donor (D) has a major impact on the risk of developing CMV disease. In the high-risk D+/R- population, >50% are likely to develop CMV disease in the absence of prophylaxis and/or pre-emptive therapy. We have used low-dose valacyclovir prophylaxis for high-risk renal transplant patients, and graft and patient survival up to 5 years after transplantation was comparable to data reported for other prophylactic protocols. The incidence of CMV disease and graft rejection during the first year after transplantation was also comparable to that achieved with other protocols, and without the adverse effects reported for other therapies. In the D+/R+ population, with a 15-35% risk of developing CMV disease, it is important to identify those individuals that are subject to a higher risk because of risk factors other than CMV serostatus. We therefore measured several immunologic parameters in renal transplant patients and in immunocompetent individuals with latent and primary CMV infection. In patients with a primary symptomatic CMV infection, CMV-specific CD8+ T cells peaked within a month after onset of symptoms but declined rapidly. In renal transplant patients, we found that the reduction in IFNγ-producing CMV-specific CD4+ T cells at 2 months post-transplantation may predict high-grade CMV DNAemia.
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21. |
- Öhman, Marie, 1958-
(author)
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Kropp och makt i rörelse
- 2007
-
Doctoral thesis (other academic/artistic)abstract
- Body and Power in MotionThis dissertation is concerned with body and politics, or, more specifi cally body, power and governance. The central question is how specifi c individuals and bodies are constituted in the teaching of Physical Education (PE) in school. Inspired by Foucault’s work and the research fi eld that emanates from the concept of governmentality, one of the ambitions is to develop a method that facilitates the study of power and governance processes in teachers’ and students’ interactive actions and dealings. With the aid of this approach, 15 video-recorded physical education lessons in 5 Swedish nine-year compulsory schools are analysed in order to demonstrate how governance processes are included in the work and activities in terms of how the processes of governance–self-governance are staged, and the direction this takes. In using the term direction I am here referring to the content the governance is aiming towards, where the question of which subjects and bodies are constituted is of substantial interest. This means that the study not only focuses on what is done, but also on the way in which it is done, i.e. it analyses both process and content.The results show that physical exertion and the desire for physical work is a thread that runs though the analysed material. It is mainly scientifi c knowledge about the body that is referred to in actual teaching practice. This is displayed through the use of a scientifi cally inspired language when talking about the body, where effects on muscles and degrees of oxygen intake are considered in connection with the physical activities. In connection with physical exertion, pupils are encouraged to do their best, try the activities on offer, cooperate with others and face challenges. In line with the governmentality perspective’s problematisation of the process governance–self-governance, the study highlights a governance mentality that is not characterised by coercion, but is rather directed towards different components of willingness where the students are expected to be participatory, take responsibility and govern their own actions in the direction of that which is most desirable and reasonable. The willingness component appears as the actual hub of character-building, were the students ought to be physically active, should want to do their best, be willing to try, should want to show solidarity and should want to defeat the others. The process of governance–self-governance is staged as different ways of appealing to one’s willingness in the activities studied. Specifi c governance techniques are used to support and promote self-governance work, i.e. different forms of encouragement strengthen the correct action, emphasising physical exertion as pleasurable and focuses on the fact that we are all involved in a common project. In the dissertation it is shown how the body is included in a socio-political context. Through the body the individual is turned into a participant of physical projects concerned with becoming a certain kind of social citizen. The body thus symbolises the complex encounter between the individual and society. In this way the study demonstrates and highlights tendencies that are evident in modern society. It is thus a narrative that indicates how we all become part of a discourse system.
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22. |
- Abzhandadze, Tamar, 1980, et al.
(author)
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Development of a short-form Swedish version of the Montreal Cognitive Assessment (s-MoCA-SWE): protocol for a cross-sectional study
- 2021
-
In: Bmj Open. - : BMJ. - 2044-6055. ; 11:5
-
Journal article (peer-reviewed)abstract
- Introduction Short forms of the Montreal Cognitive Assessment (MoCA) have allowed quick cognitive screening. However, none of the available short forms has been created or validated in a Swedish sample of patients with stroke. The aim is to develop a short-form Swedish version of the MoCA (s-MoCA-SWE) in a sample of patients with acute and subacute stroke. The specific objectives are: (1) to identify a subgroup of MoCA items that have the potential to form the s-MoCA-SWE; (2) to determine the optimal cut-off value of s-MoCA-SWE for predicting cognitive impairment and (3) and to compare the psychometric properties of s-MoCA-SWE with those of previously developed MoCA short forms. Methods and analysis This is a statistical analysis protocol for a cross-sectional study. The study sample will comprise patients from Vaststroke, a local stroke registry from Gothenburg, Sweden and Efficacy oF Fluoxetine-a randomisEd Controlled Trial in Stroke (EFFECTS), a randomised controlled trial in Sweden. The s-MoCA-SWE will be developed by using exploratory factor analysis and the boosted regression tree algorithm. The cut-off value of s-MoCA-SWE for impaired cognition will be determined based on binary logistic regression analysis. The psychometric properties of s-MoCA-SWE will be compared with those of other MoCA short forms by using cross-tabulation and area under the receiving operating characteristic curve analyses. Ethics and dissemination The Vaststroke study has received ethical approval from the Regional Ethical Review Board in Gothenburg (346-16) and the Swedish Ethical Review Authority (amendment 2019-04299). The handling of data generated within the framework of quality registers does not require written informed consent from patients. The EFFECTS study has received ethical approval from the Stockholm Ethics Committee (2013/1265-31/2 on 30 September 2013). All participants provided written consent. Results will be published in an international, peer-reviewed journal, presented at conferences and communicated to clinical practitioners in local meetings and seminars.
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23. |
- Abzhandadze, Tamar, 1980, et al.
(author)
-
DEVELOPMENT OF A SWEDISH SHORT VERSION OF THE MONTREAL COGNITIVE ASSESSMENT FOR COGNITIVE SCREENING IN PATIENTS WITH STROKE
- 2023
-
In: Journal of Rehabilitation Medicine. - : Medical Journals Sweden. - 1650-1977 .- 1651-2081. ; 55
-
Journal article (peer-reviewed)abstract
- Objective: The primary objective was to develop a Swedish short version of the Montreal Cognitive Assessment (s-MoCA-SWE) for use with patients with stroke. Secondary objectives were to iden-tify an optimal cut-off value for the s-MoCA-SWE to screen for cognitive impairment and to compare its sensitivity with that of previously developed short forms of the Montreal Cognitive Assessment. Design: Cross-sectional study.Subjects/patients: Patients admitted to stroke and rehabilitation units in hospitals across Sweden. Methods: Cognition was screened using the Mont-real Cognitive Assessment. Working versions of the s-MoCA-SWE were developed using supervised and unsupervised algorithms.Results: Data from 3,276 patients were analysed (40% female, mean age 71.5 years, 56% minor stroke at admission). The suggested s-MoCA-SWE compri-sed delayed recall, visuospatial/executive function, serial 7, fluency, and abstraction. The aggregated scores ranged from 0 to 16. A threshold for impai-red cognition & LE; 12 had a sensitivity of 97.41 (95% confidence interval, 96.64-98.03) and positive pre-dictive value of 90.30 (95% confidence interval 89.23-91.27). The s-MoCA-SWE had a higher abso-lute sensitivity than that of other short forms.Conclusion: The s-MoCA-SWE (threshold & LE; 12) can detect post-stroke cognitive issues. The high sensitivity makes it a potentially useful "rule-out" tool that may eliminate severe cognitive impair-ment in people with stoke.
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24. |
- Abzhandadze, Tamar, 1980, et al.
(author)
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Transforming self-reported outcomes from a stroke register to the modified Rankin Scale: a cross-sectional, explorative study
- 2020
-
In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 10:1
-
Journal article (peer-reviewed)abstract
- The aim was to create an algorithm to transform self-reported outcomes from a stroke register to the modified Rankin Scale (mRS). Two stroke registers were used: the Vaststroke, a local register in Gothenburg, Sweden, and the Riksstroke, a Swedish national register. The reference variable, mRS (from Vaststroke), was mapped with seven self-reported questions from Riksstroke. The transformation algorithm was created as a result of manual mapping performed by healthcare professionals. A supervised machine learning method-decision tree-was used to further evaluate the transformation algorithm. Of 1145 patients, 54% were male, the mean age was 71 y. The mRS grades 0, 1 and 2 could not be distinguished as a result of manual mapping or by using the decision tree analysis. Thus, these grades were merged. With manual mapping, 78% of the patients were correctly classified, and the level of agreement was almost perfect, weighted Kappa (K-w) was 0.81. With the decision tree, 80% of the patients were correctly classified, and substantial agreement was achieved, K-w=0.67. The self-reported outcomes from a stroke register can be transformed to the mRS. A mRS algorithm based on manual mapping might be useful for researchers using self-reported questionnaire data.
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25. |
- Barros, Guilherme W. F., et al.
(author)
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Performance of modeling and balancing approach methods when using weights to estimate treatment effects in observational time-to-event settings
- 2023
-
In: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 18:12
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Journal article (peer-reviewed)abstract
- In observational studies weighting techniques are often used to overcome bias due to confounding. Modeling approaches, such as inverse propensity score weighting, are popular, but often rely on the correct specification of a parametric model wherein neither balance nor stability are targeted. More recently, balancing approach methods that directly target covariate imbalances have been proposed, and these allow the researcher to explicitly set the desired balance constraints. In this study, we evaluate the finite sample properties of different modeling and balancing approach methods, when estimating the marginal hazard ratio, through Monte Carlo simulations. The use of the different methods is also illustrated by analyzing data from the Swedish stroke register to estimate the effect of prescribing oral anticoagulants on time to recurrent stroke or death in stroke patients with atrial fibrillation. In simulated scenarios with good overlap and low or no model misspecification the balancing approach methods performed similarly to the modeling approach methods. In scenarios with bad overlap and model misspecification, the modeling approach method incorporating variable selection performed better than the other methods. The results indicate that it is valuable to use methods that target covariate balance when estimating marginal hazard ratios, but this does not in itself guarantee good performance in situations with, e.g., poor overlap, high censoring, or misspecified models/balance constraints.
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26. |
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27. |
- Ben-Shabat, Ilan, et al.
(author)
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Characteristics of in-hospital stroke patients in Sweden : a nationwide register-based study
- 2023
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In: European Stroke Journal. - : Sage Publications. - 2396-9873 .- 2396-9881. ; 8:3, s. 777-783
-
Journal article (peer-reviewed)abstract
- INTRODUCTION: Few studies have reported the characteristics of patients with in-hospital stroke (IHS) including the reason for hospitalization and invasive procedures before the stroke. We aimed to extend current knowledge.PATIENTS AND METHODS: All adult patients with IHS in Sweden during 2010-2019 registered in the Swedish Stroke Register (Riksstroke) were included. The cohort was cross-linked to the National Patient Register and data extracted on background diagnoses, main discharge diagnoses, and procedure codes for the hospitalization when IHS occurred and any hospital-based healthcare contacts within 30 days before IHS.RESULTS: 231,402 stroke cases were identified of which 12,551 (5.4%) were in-hospital and had corresponding entries in the National Patient Register. Of the IHS patients, 11,420 (91.0%) had ischemic stroke and 1131 (9.0%) hemorrhagic stroke; 5860 (46.7%) of the IHS patients had at least one invasive procedure prior to ictus. 1696 (13.5%) had a cardiovascular procedure and 560 (4.5%) a neurosurgical procedure. 1319 (10.5%) patients only had minimally invasive procedures such as blood product transfusion, hemodialysis, or central line insertion. Common discharge diagnosis in patients with no invasive procedures were cardiovascular disorders, injuries, and respiratory disorders.DISCUSSION AND CONCLUSION: One in every 17 strokes in Sweden occur in a hospital. In this unselected large cohort the previously reported major causes for in-hospital stroke, cardiovascular and neurosurgical procedures, preceded IHS in only 18.0% of cases suggesting that other etiologies are more common than previously reported. Future studies should aim at determining absolute risks of stroke after surgical procedures and ways of risk reduction.
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28. |
- Blomberg, Karin, 1970-, et al.
(author)
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Physical touch in nursing and nursing education – an integrative review
- 2020
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Other publication (other academic/artistic)abstract
- Physical touch is a basic need of all people, regardless of age or life situation. It can provide security, well-being and belonging. But negative perceived physical touch can generate emotions such as fear, vulnerability and perceived as violations. As a consequent of the #metoo movement in the fall of 2017, it’s a risk that physical contact and especially physical touch are avoided by professions where it’s central. For example, in the context of education, studies show that sports teachers in many countries have become more cautious and avoid having physical contact with students due not to being misinterpreted as negative touch (Fletcher, 2013; Öhman, 2016; Piper, Garratt & Taylor, 2013). In healthcare, caregivers who use physical touch in their work with disabled and elderly people have also become insecure and worried that they may be misunderstood (Bergstrand, 2018). A review shows that healthcare professionals see physical touch as part of the work but want to be the initiator of the contact, not that it should be initiated by the patients (Kelly et al. 2018).The use of physical touch in healthcare is also affected by the need to avoid contamination and widespread of infections agents, a question with extra relevance in the light of the Covid-19 pandemic.There is currently a lack of knowledge about how physical touch is experienced and used. As a first step is to increase the knowledge and understanding of how physical touch is experienced and used in healthcare by mapping studies explored physical touch both in daily care but also from the perspective of nursing students. With increased knowledge, a basis for developing interventions/teaching modules can be generated.
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29. |
- Byhamre, Marja Lisa, et al.
(author)
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Swedish snus use is associated with mortality : a pooled analysis of eight prospective studies
- 2020
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In: International Journal of Epidemiology. - : Oxford University Press. - 0300-5771 .- 1464-3685. ; 49:6, s. 2041-2050
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Journal article (peer-reviewed)abstract
- BACKGROUND: The health consequences of the use of Swedish snus, including its relationship with mortality, have not been fully established. We investigated the relationship between snus use and all-cause and cause-specific mortality (death due to cardiovascular diseases, cancer diseases and all other reasons, respectively) in a nationwide collaborative pooling project.METHODS: We followed 169 103 never-smoking men from eight Swedish cohort studies, recruited in 1978-2010. Shared frailty models with random effects at the study level were used in order to estimate adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) of mortality associated with snus use.RESULTS: Exclusive current snus users had an increased risk of all-cause mortality (aHR 1.28, 95% CI 1.20-1.35), cardiovascular mortality (aHR 1.27, 95% CI 1.15-1.41) and other cause mortality (aHR 1.37, 95% CI 1.24-1.52) compared with never-users of tobacco. The risk of cancer mortality was also increased (aHR 1.12, 95% CI 1.00-1.26). These mortality risks increased with duration of snus use, but not with weekly amount.CONCLUSIONS: Snus use among men is associated with increased all-cause mortality, cardiovascular mortality, with death from other causes and possibly with increased cancer mortality.
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30. |
- Cullberg, Marie, 1958-
(author)
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Direct Thrombin Inhibitors in Treatment and Prevention of Venous Thromboembolism: Dose – Concentration – Response Relationships
- 2006
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Doctoral thesis (other academic/artistic)abstract
- For prevention and treatment of thrombotic diseases with an anticoagulant drug it is important that an adequate dose is given to avoid occurrence or recurrence of thrombosis, without increasing the risk of bleeding and other adverse events to unacceptable levels. The aim of this thesis was to develop mathematical models that describe the dose-concentration (pharmacokinetic) and concentration-response (pharmacodynamic) relationships of direct thrombin inhibitors, in order to estimate optimal dosages for treatment and long-term secondary prevention of venous thromboembolism (VTE).Population pharmacokinetic-pharmacodynamic models were developed, based on data from clinical investigations in healthy volunteers and patients receiving intravenous inogatran, subcutaneous melagatran and/or its oral prodrug ximelagatran. The benefit-risk profiles of different ximelagatran dosages were estimated using clinical utility functions. These functions were based on the probabilities and fatal consequences of thrombosis, bleeding and elevation of the hepatic enzyme alanine aminotransferase (ALAT).The studies demonstrate that the pharmacokinetics of melagatran and ximelagatran were predictable and well correlated to renal function. The coagulation marker, activated partial thromboplastin time (APTT), increased non-linearly with increasing thrombin inhibitor plasma concentration. Overall, the systemic melagatran exposure (AUC) and APTT were similarly predictive of thrombosis and bleedings. The identified relationship between the risk of ALAT-elevation and melagatran AUC suggests that the incidence approaches a maximum at high exposures. The estimated clinical utility was favourable compared to placebo in the overall study population and in special subgroups of patients following fixed dosing of ximelagatran for long-term secondary prevention of VTE. Individualized dosing was predicted to add limited clinical benefit in this indication.The models developed can be used to support the studied dosage and for selection of alternative dosing strategies that may improve the clinical outcome of ximelagatran treatment. In addition, the models may be extrapolated to aid the dose selection in clinical trials with other direct thrombin inhibitors.
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31. |
- Darehed, David, et al.
(author)
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Diurnal variations in the quality of stroke care in Sweden
- 2019
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In: Acta Neurologica Scandinavica. - : Hindawi Limited. - 0001-6314 .- 1600-0404. ; 140:2, s. 123-130
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Journal article (peer-reviewed)abstract
- Objectives: A recent study of acute stroke patients in England and Wales revealed several patterns of temporal variation in quality of care. We hypothesized that similar patterns would be present in Sweden and aimed to describe these patterns. Additionally, we aimed to investigate whether hospital type conferred resilience against temporal variation. Materials and Methods: We conducted this nationwide registry-based study using data from the Swedish Stroke Register (Riksstroke) including all adult patients registered with acute stroke between 2011 and 2015. Outcomes included process measures and survival. We modeled time of presentation as on/off-hours, shifts, day of week, 4-hour, and 12-hour time blocks. We studied hospital resilience by comparing outcomes across hospital types. Results: A total of 113 862 stroke events in 72 hospitals were included. The process indicators and survival all showed significant temporal variation. Door-to-needle (DTN) time within 30 minutes was less likely during nighttime than daytime (OR 0.50; 95% CI 0.41-0.60). Patients admitted during off-hours had lower odds of direct stroke unit (SU) admission (OR 0.72; 95% CI 0.70-0.75). 30-day survival was lower in nighttime vs daytime presentations (OR 0.90, 95% CI 0.84-0.96). The effects of temporal variation differed significantly between hospital types for DTN time within 30 minutes and direct SU admission where university hospitals were more resilient than specialized non-university hospitals. Conclusions: Our study shows that variation in quality of care and survival is present throughout the whole week. We also found that university hospitals were more resilient to temporal variation than specialized non-university hospitals.
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32. |
- Darehed, David, 1986-, et al.
(author)
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In-hospital delays in stroke thrombolysis : every minute counts
- 2020
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In: Stroke. - : American Heart Association. - 0039-2499 .- 1524-4628. ; 51:8, s. 2536-2539
-
Journal article (peer-reviewed)abstract
- Background and Purpose: Intravenous thrombolysis is a well-established treatment for acute ischemic stroke. Our aim was to quantify the effect of each minute delay in door-to-needle time (DNT) on 90-day survival, intracerebral hemorrhagic complication <36 hours, and functional outcomes at 3 months, in routine clinical practice.Methods: Our nationwide registry-based study included 14 132 adult patient admissions with ischemic stroke receiving intravenous thrombolysis from 2010 to 2017. Outcomes were analyzed using multivariable logistic regression, adjusting for potential confounders.Results: Median DNT was 47 minutes, with an improvement from 65 to 38 minutes during the study. Median age was 74 years, and median National Institutes of Health Stroke Scale 8 points. We found a significant impact of each minute delay in DNT with reduced odds of survival by 0.6%, increased odds of intracerebral hemorrhagic and worse activities of daily living by 0.3%, and worse living conditions and mobility by 0.4%.Conclusions: Improving DNT is a key factor in achieving good outcomes after stroke. We estimate that in Sweden alone in 2017, compared with 2010, the shorter DNT achieved have saved 38 lives, avoided 8 intracerebral hemorrhagic transformations, and spared, respectively, 36, 51, and 52 patients from a worsening in activities of daily living, living conditions, and mobility. DNT is sensitive for interventions and should be targeted in quality improvement efforts.
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33. |
- Darehed, David, et al.
(author)
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Time Trends and Monthly Variation in Swedish Acute Stroke Care
- 2019
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In: Frontiers in Neurology. - : Frontiers Media SA. - 1664-2295. ; 10
-
Journal article (peer-reviewed)abstract
- Background and Purpose: Studies of monthly variation in acute stroke care have led to conflicting results. Our objective was to study monthly variation and longitudinal trends in quality of care and patient survival following acute stroke.Methods: Our nationwide study included all adult patients (≥18 years) with acute stroke (ischemic or hemorrhagic), admitted to Swedish hospitals from 2011 to 2016, and that were registered in The Swedish Stroke Register (Riksstroke). We studied how month of admission and longitudinal trends affected acute stroke care and survival. We also studied resilience to this variation among hospitals with different levels of specialization. Results: We included 132,744 stroke admissions. The 90-day survival was highest in May and lowest in January (84.1 vs. 81.5%). Thrombolysis rates and door-to-needle time within 30 min increased from 2011 to 2016 (respectively, 7.3 vs. 12.8% and 7.7 vs. 28.7%). Admission to a stroke unit as first destination of hospital care was lowest in January and highest in June (78.3 vs. 80.5%). Stroke unit admission rates decreased in university hospitals from 2011 to 2016 (83.4 vs. 73.9%), while no such trend were observed in less specialized hospitals. All the differences above remained significant (p < 0.05) after adjustment for possible confounding factors. Conclusion: We found that month of admission and longitudinal trends both affect quality of care and survival of stroke patients in Sweden, and that the effects differ between hospital types. The observed variation suggests an opportunity to improve stroke care in Sweden. Future studies ought to focus on identifying the specific factors driving this variation, for subsequent targeting by quality improvement efforts.
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34. |
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35. |
- Engdahl, Johan, et al.
(author)
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Multicentre, national, investigator-initiated, randomised, parallel-group, register-based superiority trial to compare extended ECG monitoring versus standard ECG monitoring in elderly patients with ischaemic stroke or transient ischaemic attack and the effect on stroke, death and intracerebral bleeding : the AF SPICE protocol
- 2023
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In: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 13:11
-
Journal article (peer-reviewed)abstract
- Introduction: Atrial fibrillation (AF) is a major risk factor for ischaemic stroke and transient ischaemic attack (TIA), and AF detection can be challenged by asymptomatic and paroxysmal presentation. Long-term ECG monitoring after ischaemic stroke or TIA is recommended by all major societies in cardiology and cerebrovascular medicine as a secondary prophylactic measure. However, data on stroke reduction are lacking, and the recommendations show significant diversity.Methods and analysis: AF SPICE is a multicentre, national, investigator-initiated, randomised, parallel-group, register-based trial comparing extended ECG monitoring versus standard ECG monitoring in patients admitted with ischaemic stroke or TIA, with a composite endpoint of stroke, all-cause-mortality and intracerebral bleeding. Patients aged ≥ 70 years without previous AF will be randomised 1:1 to control (standard ECG monitoring) or intervention (extended ECG monitoring). In the control arm, patients will undergo 48±24 hours (ie, a range of 24-72hours) of continuous ECG monitoring according to national recommendations. In the intervention arm, patients will undergo 14+14 days of continuous ECG monitoring 3months apart using an ECG patch device, which will provide an easy-accessed, well-tolerated 14-day continuous ECG recording. All ECG patch recordings will be read in a core facility. In cases of AF detection, oral anticoagulation will be recommended if not contraindicated. A pilot phase has been concluded in 2022, which will transcend into the main trial during 2023-2026, including approximately 30 stroke units. The sample size was calculated to be 3262 patients. The primary outcome will be collected from register data during a 36-month follow-up.Ethics and dissemination: Ethical approval has been provided by the Swedish Ethical Review Authority, reference 2021-02770. The trial will be conducted according to the ethical principles of the Declaration of Helsinki and national regulatory standards. Positive results from the study have the potential for rapid dissemination in clinical practice. Trial registration number NCT05134454.
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36. |
- Eriksson, Britt, 1967-
(author)
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Metabolic, methodological and developmental aspects of body composition : Studies in women and children with special reference to early life mechanisms behind childhood obesity
- 2010
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Doctoral thesis (other academic/artistic)abstract
- In recent decades the number of children with overweight has increased worldwide. To understand the mechanisms behind this development, knowledge regarding metabolism and physiology in relation to the nutritional situation in early life is of importance. In particular, information about body composition development during early childhood is relevant. This thesis presents three studies in this area. In the pregnancy study serum samples, collected from 23 women before, during and after pregnancy, were analysed for serum levels of leptin, adiponectin and resistin and used to assess insulin resistance (HOMA-IR) in relation to the total body fat (TBF) content of the women. TBF (%) and leptin were significantly correlated with HOMA-IR before and during pregnancy. When HOMA-IR was regressed on TBF (%) the slope of the regression line was 0.111 in gestational week 32 and significantly (p<0.05) higher than the value before pregnancy, 0.046, indicating that healthy pregnancy enhances the relationship between body fatness and insulin resistance. In the HF-study hydration of fat-free mass (hydration factor, HF) was assessed in 12 newborns using the doubly labelled water (DLW) method and air displacement plethysmography (PeaPod). HF was 80.9% with a low biological variability (0.81% of average HF). In the longitudinal study the body density of 108 healthy fullterm infants (53 girls, 55 boys) was measured at one and 12 weeks of age using PeaPod. Body composition was calculated using two models (Fomon’s and Butte’s). BMI values for the mothers of the infants were assessed before pregnancy. Body composition and total energy expenditure using the DLW-method were assessed in 20 of these children at the age of 1.5 years, when their sleeping metabolic rate was measured using indirect calorimetry and their resting energy metabolism was calculated using prediction equations. Butte´s model gave significantly (p<0.05) lower values for TBF than Fomon´s model, and invalid results for five newborns. Using Fomon´s model, at one week of age girls contained 13.4 ± 3.7 % and boys contained 12.5 ± 4.0 % TBF. The corresponding figures at 12 weeks were 26.3 ± 4.2 % and 26.4 ± 5.1 %. The mothers’ BMI values before pregnancy were correlated with the body weight but not with the TBF (g,%) or fat-free mass (g) of their infants at one week of age. At 1.5 years of age girls (n=9) contained 28.0±2.8 % and boys (n=11) 28.3±3.7 % TBF. Between one and 12 weeks of age all infants increased their TBF content, while 13 children increased and seven children decreased their TBF content between the ages of 12 weeks and 1.5 years. The results demonstrated that predicting rather than measuring resting energy metabolism involves a risk for spurious correlations between TBF and physical activity level. The level of physical activity (x), was negatively correlated with [TBF (%) at 1.5 years minus TBF (%) at 12 weeks] (y), r=-0.52, p=0.02. In conclusion, the results suggest that the body fat content of a woman has a stimulating effect on the growth, rather than on the fat retention, of her foetus. They also show that the Fomon model is the best available model when calculating the body composition of infants from body density. Finally, the results indicate that physical activity at the age of 1.5 years is important regarding the rate at which the high level of body fat, typical of infancy, decreases in early childhood.
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37. |
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38. |
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39. |
- Eriksson, Marie, Professor
(author)
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Minskade skillnader mellan kvinnor och män vid strokebehandling
- 2021
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Other publication (pop. science, debate, etc.)abstract
- Könsskillnader vid behandling av strokepatienter har minskat. Svensk strokevård har också förbättrats och utvecklats mycket positivt över tid. Det visar en ny forskningsstudie med data från det nationella kvalitetsregistret Riksstroke.
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40. |
- Eriksson, Marie, Professor, et al.
(author)
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Sex Differences in Stroke Care and Outcome 2005-2018 : Observations From the Swedish Stroke Register
- 2021
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In: Stroke. - : AHA Journals. - 0039-2499 .- 1524-4628. ; 52:10, s. 3233-3242
-
Journal article (peer-reviewed)abstract
- BACKGROUND AND PURPOSE: Previous studies of stroke management and outcome in Sweden have revealed differences between men and women. We aimed to analyze if differences in stroke incidence, care, and outcome have altered over time.METHODS: All stroke events registered in the Swedish Stroke Register 2005 to 2018 were included. Background variables and treatment were collected during the acute hospital stay. Survival data were obtained from the national cause of death register by individual linkage. We used unadjusted proportions and estimated age-adjusted marginal means, using a generalized linear model, to present outcome.RESULTS: We identified 335 183 stroke events and a decreasing incidence in men and women 2005 to 2018. Men were on average younger than women (73.3 versus 78.1 years) at stroke onset. The age-adjusted proportion of reperfusion therapy 2005 to 2018 increased more rapidly in women than in men (2.3%-15.1% in men versus 1.4%-16.9% in women), but in 2018, women still had a lower probability of receiving thrombolysis within 30 minutes. Among patients with atrial fibrillation, oral anticoagulants at discharge increased more rapidly in women (31.2%-78.6% in men versus 26.7%-81.9% in women). Statins remained higher in men (36.9%-83.7% in men versus 32.3%-81.2% in women). Men had better functional outcome and survival after stroke. After adjustment for women's higher age, more severe strokes, and background characteristics, the absolute difference in functional outcome was <1% and survival did not differ.CONCLUSIONS: Stroke incidence, care, and outcome show continuous improvements in Sweden, and previously reported differences between men and women become less evident. More severe strokes and older age in women at stroke onset are explanations to persisting differences.
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41. |
- Eriksson, Marie, Professor, et al.
(author)
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Stroke Recurrence Following 28 Days After First Stroke in Men and Women 2012 to 2020 : Observations From the Swedish Stroke Register
- 2023
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In: Journal of the American Heart Association. - : John Wiley & Sons. - 2047-9980. ; 12:3
-
Journal article (peer-reviewed)abstract
- Background: Stroke incidence, care, and survival show continuous improvements in Sweden, including no or decreasing disparities between men and women. In this study, we aimed to estimate and compare the risk of stroke recurrence in men and women over time, accounting for the competing risk of death.Methods and Results: We included adult patients with first-time stroke (ischemic or intracerebral hemorrhage) registered in Riksstroke (the Swedish Stroke Register), 2012 to 2020, and followed until December 2020. Stroke recurrences included new events registered in Riksstroke from 28 days after stroke. To account for the competing risk of death, we used the cumulative incidence function to estimate crude incidences, and multivariable Cox regression to estimate cause-specific hazard ratios (HRs) adjusting for differences in patients' risk factor profiles. The study included 72 148 (53.5%) men and 62 689 (46.5%) women. We observed 10 925 stroke recurrences and 81 811 deaths following the initial 28 days after the first stroke. The cumulative incidence of stroke recurrence was 3.7% (95% CI, 3.6-3.8) after 1 year, 7.0 (95% CI, 6.8-7.1) after 3 years, and 9.1% (95% CI, 8.9-9.3) after 5 years. The incidence decreased substantially during the study period (HR, 2019-2020 versus 2012, 0.824 [95% CI, 0.759-0.894]). Overall, men had a lower risk of stroke recurrence. After adjustments for differences in patient characteristics, men had a slightly higher risk of recurrence (of any type) after an ischemic stroke (HR, 1.090 [95% CI, 1.045-1.138]) and a lower risk after hemorrhagic stroke (HR, 0.880 [95% CI, 0.781-0.991]) compared with women.Conclusions: The risk of stroke recurrence has decreased in both men and women. Women's higher age and other differences in risk factors partly explain their higher risk of stroke recurrence compared with men.
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42. |
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43. |
- Gustavsson Holmström, Marie, 1965-
(author)
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Föräldrar med funktionshinder : om barn, föräldraskap och familjeliv
- 2002
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Doctoral thesis (other academic/artistic)abstract
- An increasing number of people with disabilities are choosing to become parents. However, several official goverment reports and other evidence points to the fact that parents with disabilities sometimes experience negative bias and distrust of their capacities as parents. The aim of this study is to describe and analyse aspects of parenthood in the families including parents with disabilities and/or chronic illness, as well as to illuminate concepts of an thoughts on parenthood and disability in these families. This is a qualitative interview study, complemented with structured diaries and network maps. The impairments or chronic illness of the parents in the eleven families of the study are cerebral palsy, spinal cord injury and multiple sclerosis.The different areas of the study are: the parents' reflections on becoming parents, the impact of the surrounding environment on the family, the effects of impairment or chronic illness in the family's everyday life and the parents' reflections on children and parenthood. The parents first and foremost describe their families as like any other families, but at the same time describe the special circumstances they live under. They work to handle the possibilities of negative consequences for the children with different strategies. The parents describe what they regard as the special experiences and knowledge that their children acquire which will benefit them as adults. The study recognises some dichotomous concepts relevant to different areas of family life in families with disabilities. The feeling the parents express of living in a world of double standpoints can be understood as ambivalence or in terms of embrace of paradox.
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44. |
- Hofman, Hannelore, et al.
(author)
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Patients’ experiences with the application of medical adhesives to the skin : a qualitative systematic review protocol
- 2023
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In: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 13:6
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Research review (peer-reviewed)abstract
- Introduction: Medical adhesives are adhesives used in medical devices to establish and maintain contact with the body over a period of time (usually by application to the skin) and are widely used in most care settings. Application of medical adhesives to the skin can lead to skin stripping, mild or severe allergic reactions and skin irritation that may manifest as redness, itching or rash. Adhesive-related skin injury can lead to infection, delayed wound healing and an increased risk of scarring. These injuries can cause severe discomfort and pain, and can affect the patient’s quality of life. A systematic review summarising patient’s experiences on this topic will contribute to informing adhesive producers and policy makers, and guiding further development and improvement of available technologies.Methods and analysis: This systematic review protocol is based on the principles of the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols guideline. A systematic search will be conducted in CINAHL, EMBASE, MEDLINE and PsycINFO. In addition, manual searches will be performed, reviewing the reference lists of relevant reviews and articles included for quality assessment. Qualitative studies using various methods will be considered for inclusion. Screening of title, abstract and full text will be done by two reviewers. The methodological quality of studies under consideration will be critically assessed by two reviewers using the Joanna Briggs Institute Critical Appraisal Tool for Qualitative Research. Data extraction will be performed independently by two reviewers using a predefined data extraction form. Meta-aggregation will be used to summarise the evidence.Ethics and dissemination No ethical approval or consentis required because no participants will be recruited.This systematic review protocol is published in an openaccess journal to increase transparency of the researchmethods used. Results will be disseminated at nationaland international conferences.
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45. |
- Johansson, Cecilia, et al.
(author)
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Alcohol consumption and risk of incident atrial fibrillation : a population-based cohort study
- 2020
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In: European journal of internal medicine. - : Elsevier. - 0953-6205 .- 1879-0828. ; 76, s. 50-57
-
Journal article (peer-reviewed)abstract
- AIMS: Atrial fibrillation (AF) is a common tachyarrhythmia. High alcohol consumption is associated with increased AF risk. It remains unclear whether lower levels of alcohol consumption are also associated with AF risk, and whether the association differs between men and women. In this study, we investigated the association between low to moderate levels of alcohol consumption and AF risk in men and women.METHODS: We performed a population-based cohort study of 109,230 health examination participants in northern Sweden. Data regarding alcohol intake were obtained using a questionnaire administered at the health examination. Incident AF cases were identified from the Swedish National Patient Registry.RESULTS: AF was diagnosed in 5,230 individuals during a total follow-up of 1,484,547 person-years. Among men, AF risk increased over quartiles of weekly alcohol consumption (P for trend 0.001). Men with alcohol consumption in the highest quartile (≥4.83 standard drinks [each drink containing 12 gs of ethanol] per week; SDW) had a HR of 1.21 (95% CI 1.09-1.34) for AF compared to men in the lowest quartile (<0.90 SDW). In men, problem drinking was also associated with an increased AF risk (HR: 1.24; 95% CI: 1.10-1.39). Among women, AF risk was not significantly associated with alcohol consumption (P for trend 0.09 for decreasing risk of AF over quartiles of weekly alcohol consumption) or problem drinking (HR: 1.00; 95% CI 0.70-1.42).CONCLUSION: Self-reported alcohol consumption and problem drinking were associated with an increased risk of AF among men, but not in women.
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46. |
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47. |
- Johansson, Cecilia, et al.
(author)
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Weight, height, weight change, and risk of incident atrial fibrillation in middle-aged men and women
- 2020
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In: Journal of Arrhythmia. - : John Wiley & Sons. - 1880-4276 .- 1883-2148. ; 36:6, s. 974-981
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Journal article (peer-reviewed)abstract
- Background: Anthropometric factors are reported to be risk factors for atrial fibrillation (AF), but it is unclear whether weight change in mid‐life is associated with AF. We aimed to study the possible associations of weight, height, and weight change with the risk of incident AF in men and women.Methods: Our study cohort included 108 417 persons (51% women) who participated in a population‐based health examination in northern Sweden at 30, 40, 50, or 60 years of age. The health examination included weight and height measurement and collection of data regarding cardiovascular risk factors. Within this cohort, 40 275 participants underwent two health examinations with a 10‐year interval. We identified cases with a first‐ever diagnosis of AF through the Swedish National Patient Registry.Results: During a total follow‐up of 1 469 820 person‐years, 5154 participants developed incident AF. The mean age at inclusion was 46.3 years, and mean age at AF diagnosis was 66.6 years. After adjustment for potential confounders, height, weight, body mass index (BMI), and body surface area (BSA) were positively associated with risk of incident AF in both men and women. Among participants who underwent two health examinations 10 years apart, 1142 persons developed AF. The mean weight change from baseline was a gain of 4.8%. Weight gain or weight loss was not significantly associated with risk of incident AF.Conclusions: Height, weight, BMI, and BSA showed positive associations with risk of incident AF in both men and women. Midlife weight change was not significantly associated with AF risk.
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48. |
- Karlberg-Traav, Malin, 1962-
(author)
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Evidence-based nursing : reflections from different perspectives
- 2020
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Doctoral thesis (other academic/artistic)abstract
- The overall aim of this thesis was to describe the use of evidence-based nursing (EBN) with respect to the four cornerstones of EBN: research, nursing theory, the patient’s perspective and clinical competence. Study I explored registered nurses (RNs) self-reported research utilization (RU) in relation to their work climate. A quantitative approach was used; further analyze led to a cluster solution of the measured variables, and low reported RU were compared with higher reported RU. The result showed that an academic degree underpinned the instrumental research utilization (IRU), also women reported higher use of conceptual research utilization (CRU). An association between low RU and dynamism/liveliness was seen, and younger RNs and RNs with shorter working experience reported higher scores for playfulness/humor and conflicts. Study II described how nurses conceived working in a ward where a nursing philosophy had been implemented. A phenomenographic method was used. The philosophy supported the clinical work and underpinned reflection and shared values. A prerequisite was a dedicated leader. The RNs described the care being of high quality. First line nurse managers (FLNMs) role and their experience of opportunities and obstacles to support EBN, was explored in study III. Data was collected using focus groups and analysed using phenomenography. The result showed that the FLNMs need to make an entity of vision and reality to be supportive according of EBN. The last study was an integrative literature review and the perspective of the patient in articles reporting on interventions designed to improve nursing was in focus. The result in study IV showed that the perspective of the patient represents five aspects, and that reporting clinical implications is important. In conclusion; the different perspectives all relates to EBN. Registered nurses need to be encouraged to develop their academic training, to be able to work according to EBN. A nursing philosophy provides time for reflection and a feeling of performing care of high quality. FLNMs need to take their role to support the RNs in order to work evidence-based. Conscious and communicated aspects supported the perspective of the patient.
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49. |
- Klintö, Kristina, et al.
(author)
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Inter-centre comparison of data on surgery and speech outcomes at 5 years of age based on the Swedish quality registry for patients born with cleft palate with or without cleft lip
- 2022
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In: BMC Pediatrics. - : Springer Science and Business Media LLC. - 1471-2431. ; 22:1
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Journal article (peer-reviewed)abstract
- BACKGROUND: The objective of the Swedish cleft lip and palate registry (CLP registry) is to promote quality control, research and improvement of treatment, by the comparison of long-term results. The aim was to compare data from the CLP registry among the six treatment centres, regarding data on surgery and speech outcomes at 5 years of age.METHODS: The participants were 430 children born in Sweden from 2009 to 2014, with cleft palate with or without cleft lip and without known syndromes and/or additional malformations. The number of primary and secondary palatal surgeries up to 5 years of age, timing of the last primary palatal surgery, percentage consonants correct, percentage non-oral speech errors and perceived velopharyngeal competence at 5 years were assessed. Multivariable binary logistic regression adjusted for sex and cleft type was used to compare results between the six centres.RESULTS: At one centre (centre 4), the palate was closed in one to three stages, and at the remaining centres in one or two stages. At centre 4, more children underwent a higher number of palatal surgeries, and the last primary palatal surgery was performed at a higher age. Children in centre 4 were also less likely to achieve ≥86% correct consonants (OR = 0.169, P = < 0.001), have no non-oral speech errors (OR = 0.347, P = < 0.001), or have competent or marginally incompetent velopharyngeal competence (OR = 0.244, P = < 0.001), compared to the average results of the other centres. No clear association between patient volume and speech outcome was observed.CONCLUSIONS: The results indicated the risk of a negative speech result if the last primary palatal surgery was performed after 25 months of age. Whether the cleft in the palate was closed in one or two stages did not affect speech outcome. The Swedish CLP registry can be used for open comparisons of treatment results to provide the basis for improvements of treatment methods. If deviating negative results are seen consistently at one centre, this information should be acted upon by further investigation and analysis, making changes to the treatment protocol as needed.
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50. |
- Knezevic, Zlatana, 1984-
(author)
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Child (Bio)Welfare and Beyond : Intersecting Injustices in Childhoods and Swedish Child Welfare
- 2020
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Doctoral thesis (other academic/artistic)abstract
- The current thesis discusses how tools for analysing power are developed predominately for adults, and thus remain underdeveloped in terms of understanding injustices related to age, ethnicity/race and gender in childhoods. The overall ambition of this dissertation is to inscribe a discourse of intersecting social injustices as relevant for childhoods and child welfare, and by interlinking postcolonial, feminist, and critical childhood studies. The dissertation is set empirically within the policy and practice of Swedish child welfare, here exemplified by the assessment framework Barns Behov i Centrum (BBIC). It aims to explore how Swedish child welfare, as a field of knowledge, modes of knowing and knowing subjects, constitutes an arena for claims and responses to intersecting social justice issues.The material consists of BBIC primers and selected samples from, a total of 283 case reports from a Swedish social service agency. The case reports address assessments of children (0–12 years of age). This dissertation is based on four qualitative studies using discourse analysis, as well as analysis inspired by thematic and case-study methodology. Two studies focus on child welfare discourses in BBIC documents involving social problems and violence, and two studies are based on child welfare case reports.Studies I-II address child welfare policy and practice by analysing the conditions required for children to participate, in terms of children’s moral status and in terms of status of ‘evidencing’ needs for protection. Studies III-IV explore this further from the perspective of intersecting and embodied social injustices in childhoods. Together, the studies interconnect child welfare as a field of knowledge, modes of knowing and knowers with child welfare as a moral arena for claims to rights, recognition, and social justice.The synthesised findings point to child biowelfare, in which justice discourses are largely absent. Biowelfare is informed by a mode of knowing and ‘evidencing’ risks to children’s health and development, which are confined to scientific predicting-believing, seeing-believing by professionals and a moral economy of care, all of which constrain the idea that injustices are structural and intersecting. Biowelfare primarily responds to children as ‘speaking’ biological bodies, rather than as voices of justice. In this sense, injustices of an epistemological nature are interconnected with social injustices. When issues of justice are mobilised in case reports and policy, they come across as rather ‘unjust’, primarily confined to the sphere of the family home of racialised children and not connected to ‘general’ children. In addition to intersections of age, ethnicity/race and gender, class and health are fundamental to recognition and protection in biowelfare. Finally, the dissertation indicates the need for a moral economy which responds to intersecting social injustices such as racial, gender-based and ageist violence in childhoods, and violations of children’s bodily integrity.Key words: biowelfare, child protection, child welfare, critical childhood studies, critical social work, embodiment, epistemic injustice, epistemology, feminist theory, intersectionality, justice subjectivity, moral economy, moral subjectivity, participation, postcolonial theory, poststructural social work, social justice, violence
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