1.
Hallvig, D., et al.
(författare)
Sleepy driving on the real road and in the simulator - A comparison
2013
Ingår i: Accident Analysis and Prevention. - : Elsevier BV. - 0001-4575 .- 1879-2057. ; 50, s. 44-50
Tidskriftsartikel (refereegranskat) abstract
Sleepiness has been identified as one of the most important factors contributing to road crashes. However, almost all work on the detailed changes in behavior and physiology leading up to sleep related crashes has been carried out in driving simulators. It is not clear, however, to what extent simulator results can be generalized to real driving. This study compared real driving with driving in a high fidelity, moving base, driving simulator with respect to driving performance, sleep related physiology (using electroencephalography and electrooculography) and subjective sleepiness during night and day driving for 10 participants. The real road was emulated in the simulator. The results show that the simulator was associated with higher levels of subjective and physiological sleepiness than real driving. However, both for real and simulated driving, the response to night driving appears to be rather similar for subjective sleepiness and sleep physiology. Lateral variability was more responsive to night driving in the simulator, while real driving at night involved a movement to the left in the lane and a reduction of speed, both of which effects were absent in the simulator. It was concluded that the relative validity of simulators is acceptable for many variables, but that in absolute terms simulators cause higher sleepiness levels than real driving. Thus, generalizations from simulators to real driving must be made with great caution.
2.
3.
Wassenius, Ola, et al.
(författare)
Variability in Skin Exposure in Machine Operators Exposed to Cutting Fluids
1998
Ingår i: Scandinavian Journal of Work, Environment and Health. - : Scandinavian Journal of Work, Environment and Health. - 0355-3140 .- 1795-990X. ; 24:2, s. 125 - 129
Tidskriftsartikel (refereegranskat) abstract
Objective. This study describes a new technique for measuring skin exposure to cutting fluids and evaluates the variability of skin exposure among machine operators performing cyclic (repetitive) work. Methods. The technique is based on video recording and subsequent analysis of the videotape by means of computer-synchronized video equipment. The time intervals at which the machine operator's hand was exposed to fluid were registered, and the total wet time of the skin was calculated by assuming different evaporation times for the fluid. The exposure of twelve operators with different work methods was analyzed in six different workshops, which included a range of machine types, from highly automated metal cutting machines (ie, actual cutting and chip removal machines) requiring operator supervision to conventional metal cutting machines, where the operator was required to maneuver the machine and manually exchange products. Results; the relative wet time varied between 0% and 100%. A significant association between short cycle time and high relative wet time was noted. However, there was no relationship between the degree of automatization of the metal cutting machines and wet time. Conclusions. The study shows that skin exposure to cutting fluids can vary considerably between machine operators involved in manufacturing processes using different types of metal cutting machines. The machine type was not associated with dermal wetness. The technique appears to give objective information about dermal wetness. A comment: This publication is a result of a cooperation between the authors at Chalmers University of Technology and Gothenburg University, i.e. between the Department of Transportation and the Department of Occupational Health and the Department of Sociology.
4.
5.
Larsson, Simon B., et al.
(författare)
Self-reported symptom severity, general health, and impairment in post-acute phases of COVID-19: retrospective cohort study of Swedish public employees
2022
Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 12:1
Tidskriftsartikel (refereegranskat) abstract
This study aimed to examine current symptom severity and general health in a sample of primarily non-hospitalized persons with polymerase chain reaction (PCR) confirmed COVID-19 in comparison to PCR negative controls. During the first quarter of 2021, we conducted an online survey among public employees in West Sweden, with a valid COVID-19 test result. The survey assessed past-month severity of 28 symptoms and signs, self-rated health, the WHO Disability Assessment Schedule (WHODAS) 2.0 and illness severity at the time of test. We linked participants' responses to their SARS-CoV-2 PCR tests results. We compared COVID-19 positive and negative participants using univariable and multivariable regression analyses. Out of 56,221 invited, 14,222 (25.3%) responded, with a response rate of 50% among SARS-CoV-2 positive individuals. Analysis included 10,194 participants (86.4% women, mean age 45 years) who tested positive 4-12 weeks (N = 1425; subacute) and > 12 weeks (N = 1584; postcovid) prior to the survey, and 7185 PCR negative participants who did not believe that they had had COVID-19. Symptoms were highly prevalent in all groups, with worst symptoms in subacute phase participants, followed by postcovid phase and PCR negative participants. The most specific symptom for COVID-19 was loss of smell or taste. Both WHODAS 2.0 score and self-rated health were worst in subacute participants, and modestly worse in postcovid participants than in negative controls. Female gender, older age and acute illness severity had larger effects on self-rated health and WHODAS 2.0 score in PCR positive participants than in PCR negative. Studies with longer follow-up are needed to determine the long-term improvement after COVID-19.
6.
Marcheschi, Elizabeth, 1980, et al.
(författare)
To come home after a stroke: patients' early experiences of health and recovery in their home settings
2018
Konferensbidrag (övrigt vetenskapligt/konstnärligt) abstract
Healthcare systems and services for stroke patients are increasingly performed within home settings where both, people with moderate and severe disability can receive care. However, at present little knowledge is available in regard to early stroke phases and how the interaction with the physical environment of home settings might affect rehabilitation outcomes. The aim of this work was thus, to increase our understanding in regard to the interplay between home settings and people’s rehabilitation process, a month after stroke onset. A cross-sectional interdisciplinary investigation was conducted using validated measures in face-to-face interviews and by observing the participants’ interactions with their home settings. People with stroke (N = 16) that had a mild disability, and cognitive and communicative abilities to participate in an interview of approximately 2 hours, were recruited in the study and their data was collected within 4 to 7 weeks after stroke onset. Information was collected in regard to their experience of the physical and social home environment, their attachment to place, self-efficacy and the quality of continuity of care from the hospital to the home. Moreover, data about their recovery and overall health were collected with, Stroke Impact Scale and the EQ-5D. Preliminary results suggests the existence of a relation between recovery levels, self-efficacy and the perceived quality of the physical environment of home settings. More detailed results and their implication for early rehabilitation phases of stroke patients within home settings will be discussed.
7.
Religa, D., et al.
(författare)
SveDem, the Swedish Dementia Registry - A tool for improving the quality of diagnostics, treatment and care of dementia patients in clinical practice
2015
Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10:2
Tidskriftsartikel (refereegranskat) abstract
Background: The Swedish Dementia Registry (SveDem) was developed with the aim to improve the quality of diagnostic work-up, treatment and care of patients with dementia disorders in Sweden. Methods: SveDem is an internet based quality registry where several indicators can be followed over time. It includes information about the diagnostic work-up, medical treatment and community support (www.svedem.se). The patients are diagnosed and followed-up yearly in specialist units, primary care centres or in nursing homes. Results: The database was initiated in May 2007 and covers almost all of Sweden. There were 28 722 patients registered with a mean age of 79.3 years during 2007-2012. Each participating unit obtains continuous online statistics from its own registrations and they can be compared with regional and national data. A report from SveDem is published yearly to inform medical and care professionals as well as political and administrative decision-makers about the current quality of diagnostics, treatment and care of patients with dementia disorders in Sweden. Conclusion: SveDem provides knowledge about current dementia care in Sweden and serves as a framework for ensuring the quality of diagnostics, treatment and care across the country. It also reflects changes in quality dementia care over time. Data from SveDem can be used to further develop the national guidelines for dementia and to generate new research hypotheses.
8.
Roos, John Magnus
(författare)
Personality and E-shopping : Insights from a Nationally Representative Study
2019
Ingår i: Digital Transformation and Global Society. - Cham : Springer. - 9783030378578 - 9783030378585 ; 1038 CCIS, s. 257-267
Bokkapitel (refereegranskat) abstract
According to previous research, a high degree of Openness and Neuroticism, and a low degree of Agreeableness are personality determinants of e-shopping. This study aims to explore the relationship between the Five-factor model of personality (i.e. Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism) and e-shopping in a Swedish context. In a nationally representative sample, a questionnaire was distributed to 3400 citizens. The response rate was 53 percentage (N = 1812). The questionnaire included measures of the Five-factor model of personality (BFI-ten) and e-shopping. Multiple regression analyses were conducted to test if the Five-factor model of personality predicted e-shopping. The dependent variable was self-reported frequencies of e-shopping during the last 12 months. The first analysis showed that Openness is predicting e-shopping. However, this effect disappeared, when age, educational attainment and income were controlled for. Our conclusion is that the Five-factor model of personality is a poor predictor of e-shopping and that e-shopping frequencies are unrelated to the personality of internet users. Methodological limitations are discussed, for instance the use of a single-item for measuring e-shopping and a short-scale for measuring personality. There are difficulties comparing our findings with previous findings, since the concepts personality and e-shopping have not been defined uniformly. The analyses revealed significant variation in definitions, measurements and methodologies. Caution should also be taken in generalizing the present results to other countries and other time periods. © 2019, Springer Nature Switzerland AG.
9.
Ali, Yusuf, et al.
(författare)
Experimental determination of concentration factors of Ni, Ru and Sb in the model diatom Phaeodactylum tricornutum
2023
Ingår i: Scientific Reports. - 2045-2322. ; 13:1
Tidskriftsartikel (refereegranskat) abstract
This paper describes the experimental determination of concentration factors (CF) for nickel, ruthenium and antimony in the model diatom Phaeodactylum tricornutum Bohlin (Bacillariophyceae), which was chosen as a representative of marine phytoplankton. Better determinations of these CF are needed to improve the modelling of marine ecosystems at release points, where radioactive pollutants enter the ecosystem, for more accurate predictions of radiation dose to humans caused by these pollutants. A literature study revealed that the currently implemented values of these CF are based on very scarce data, and a computational sensitivity study showed that the radiation dose caused by radioisotopes of these elements depend strongly on the phytoplankton CF. Nutrient-enriched water samples from Swedish coastal waters were used as a medium for growing of the diatom species P. tricornutum and radioactive isotopes of the studied elements were added to the cultures during the exponential growth phase. The radioactivity in the P. tricornutum and in the culture medium were measured separately and used for determination of CF. Conservative estimates of the CF based on this phytoplankton proxy on the present data are 6400 L/kg for nickel, 20,000 L/kg for ruthenium and 890 L/kg for antimony, with P. tricornutum biomass masses referring to dry weight. The estimates for nickel and ruthenium are similar to previously published values, which underpins the credibility of radiation dose calculations based on these values. The estimate for antimony is uncertain, but also, to our knowledge, represents the first published experimentally based data on this CF.
10.
Alin, Rebecca, 1989, et al.
(författare)
A Preparatory Study for a Randomized Controlled Trial of Dietary Fiber Intake During Adult Pelvic Radiotherapy
2021
Ingår i: Frontiers in Nutrition. - : Frontiers Media SA. - 2296-861X. ; 8
Tidskriftsartikel (refereegranskat) abstract
Background: Patients undergoing pelvic radiotherapy are often advised to omit fiber-rich foods from their diet to reduce the adverse effects of treatment. Scientific evidence supporting this recommendation is lacking, and recent studies on animals and humans have suggested that there is a beneficial effect of dietary fiber for the alleviation of symptoms. Randomized controlled studies on dietary fiber intake during pelvic radiotherapy of sufficient size and duration are needed. As preparation for such a large-scale study, we evaluated the feasibility, compliance, participation rate, and logistics and report our findings here in this preparatory study. Methods: In this preparatory study of a fiber intervention trial, Swedish gynecological cancer patients scheduled for radiotherapy were recruited between January 2019 and August 2020. During the intervention, the participants filled out questionnaires and used an application. They also consumed a fiber supplement at first in powder form, later in capsules. Blood- and fecal samples were collected. The study is registered in clinicaltrials.gov (https://clinicaltrials.gov/ct2/show/NCT04534075?cond=fidura&draw=2&rank=1). Results: Among 136 approached patients, 57 started the study and the participation rate for primary outcomes was 63% (third blood sample) and 65% (third questionnaire). Barely half of the participants provided fecal samples. Providing concise and relevant information to the patients at the right time was crucial in getting them to participate and stay in the study. The most common reasons for declining participation or dropping out were the expected burden of radiotherapy or acute side effects. Tailoring the ambition level to each patient concerning the collection of data beyond the primary endpoints was an important strategy to keep the dropout rate at an acceptable level. Using capsules rather than psyllium in powder form made it much easier to document intake and to create a control group. During the course of the preparatory study, we improved the logistics and for the last 12 participants included, the participation rate was 100% for the earliest primary outcome. Conclusion: A variety of adjustments in this preparatory study resulted in an improved participation rate, which allowed us to set a final protocol and proceed with the main study.
