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61.
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62.
  • Björkman, A., et al. (författare)
  • From high to low malaria transmission in Zanzibar-challenges and opportunities to achieve elimination
  • 2019
  • Ingår i: BMC medicine. - : BMC. - 1741-7015. ; 17:1
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Substantial global progress in the control of malaria in recent years has led to increased commitment to its potential elimination. Whether this is possible in high transmission areas of sub-Saharan Africa remains unclear. Zanzibar represents a unique case study of such attempt, where modern tools and strategies for malaria treatment and vector control have been deployed since 2003. METHODS: We have studied temporal trends of comprehensive malariometric indices in two districts with over 100,000 inhabitants each. The analyses included triangulation of data from annual community-based cross-sectional surveys, health management information systems, vital registry and entomological sentinel surveys. RESULTS: The interventions, with sustained high-community uptake, were temporally associated with a major malaria decline, most pronounced between 2004 and 2007 and followed by a sustained state of low transmission. In 2015, the Plasmodium falciparum community prevalence of 0.43% (95% CI 0.23-0.73) by microscopy or rapid diagnostic test represented 96% reduction compared with that in 2003. The P. falciparum and P. malariae prevalence by PCR was 1.8% (95% CI 1.3-2.3), and the annual P. falciparum incidence was estimated to 8 infections including 2.8 clinical episodes per 1000 inhabitants. The total parasite load decreased over 1000-fold (99.9%) between 2003 and 2015. The incidence of symptomatic malaria at health facilities decreased by 94% with a trend towards relatively higher incidence in age groups > 5 years, a more pronounced seasonality and with reported travel history to/from Tanzania mainland as a higher risk factor. All-cause mortality among children < 5 years decreased by 72% between 2002 and 2007 mainly following the introduction of artemisinin-based combination therapies whereas the main reduction in malaria incidence followed upon the vector control interventions from 2006. Human biting rates decreased by 98% with a major shift towards outdoor biting by Anopheles arabiensis. CONCLUSIONS: Zanzibar provides new evidence of the feasibility of reaching uniquely significant and sustainable malaria reduction (pre-elimination) in a previously high endemic region in sub-Saharan Africa. The data highlight constraints of optimistic prognostic modelling studies. New challenges, mainly with outdoor transmission, a large asymptomatic parasite reservoir and imported infections, require novel tools and reoriented strategies to prevent a rebound effect and achieve elimination.
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63.
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64.
  • Block, Linda, et al. (författare)
  • Age, SAPS 3 and female sex are associated with decisions to withdraw or withhold intensive care
  • 2019
  • Ingår i: Acta Anaesthesiologica Scandinavica. - 0001-5172. ; 63:9, s. 1210-1215
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Intensive care treat critically ill patients. When intensive care is not considered beneficial for the patient, decisions to withdraw or withhold treatments are made. We aimed to identify independent patient variables that increase the odds for receiving a decision to withdraw or withhold intensive care. Methods: Registry study using data from the Swedish Intensive Care Registry (SIR) 2014-2016. Age, condition at admission, including co-morbidities (Simplified Acute Physiology Score version 3, SAPS 3), diagnosis, sex, and decisions on treatment limitations were extracted. Patient data were divided into a full care (FC) group, and a withhold or withdraw (WW) treatment group. Results: Of all 97 095 cases, 47.1% were 61-80 years old, 41.9% were women and 58.1% men. 14 996 (15.4%) were allocated to the WW group and 82 149 (84.6%) to the FC group. The WW group, compared with the FC group, was older (P < 0.001), had higher SAPS 3 (P < 0.001) and were predominantly female (P < 0.001). Compared to patients 16-20 years old, patients >81 years old had 11 times higher odds of being allocated to the WW group. Higher SAPS 3 (continuous) increased the odds of being allocated to the WW group by odds ratio [OR] 1.085, (CI 1.084-1.087). Female sex increased the odds of being allocated to the WW group by 18% (1.18; CI 1.13- 1.23). Conclusion: Older age, higher SAPS 3 at admission and female sex were found to be independent variables that increased the odds to receive a decision to withdraw or withhold intensive care. © 2019 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd
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65.
  • Bowman, L. R., et al. (författare)
  • Alarm Variables for Dengue Outbreaks: A Multi-Centre Study in Asia and Latin America
  • 2016
  • Ingår i: Plos One. - 1932-6203. ; 11:6
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Worldwide, dengue is an unrelenting economic and health burden. Dengue outbreaks have become increasingly common, which place great strain on health infrastructure and services. Early warning models could allow health systems and vector control programmes to respond more cost-effectively and efficiently. The Shewhart method and Endemic Channel were used to identify alarm variables that may predict dengue outbreaks. Five country datasets were compiled by epidemiological week over the years 2007-2013. These data were split between the years 2007-2011 (historic period) and 2012-2013 (evaluation period). Associations between alarm/outbreak variables were analysed using logistic regression during the historic period while alarm and outbreak signals were captured during the evaluation period. These signals were combined to form alarm/outbreak periods, where 2 signals were equal to 1 period. Alarm periods were quantified and used to predict subsequent outbreak periods. Across Mexico and Dominican Republic, an increase in probable cases predicted outbreaks of hospitalised cases with sensitivities and positive predictive values (PPV) of 93%/83% and 97%/86% respectively, at a lag of 1-12 weeks. An increase in mean temperature ably predicted outbreaks of hospitalised cases in Mexico and Brazil, with sensitivities and PPVs of 79%/73% and 81%/46% respectively, also at a lag of 1-12 weeks. Mean age was predictive of hospitalised cases at sensitivities and PPVs of 72%/74% and 96%/45% in Mexico and Malaysia respectively, at a lag of 4-16 weeks. An increase in probable cases was predictive of outbreaks, while meteorological variables, particularly mean temperature, demonstrated predictive potential in some countries, but not all. While it is difficult to define uniform variables applicable in every country context, the use of probable cases and meteorological variables in tailored early warning systems could be used to highlight the occurrence of dengue outbreaks or indicate increased risk of dengue transmission.
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66.
  • Brännström, Margareta, et al. (författare)
  • Effectiveness of the Liverpool care pathway for the dying in residential care homes: An exploratory, controlled before-and-after study
  • 2016
  • Ingår i: Palliative Medicine. - : SAGE Publications. - 0269-2163 .- 1477-030X. ; 30:1, s. 54-63
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Clinical pathways aim to ensure that individuals receive appropriate evidence-based care and interventions, with the Liverpool Care Pathway for the Dying Patient focusing on end of life. However, controlled studies of the Liverpool Care Pathway for the Dying Patient, particularly outside of cancer settings, are lacking. Aim: To compare the effects of the Liverpool Care Pathway for the Dying Patient and usual care on patients' symptom distress and well-being during the last days of life, in residential care homes. Design: Exploratory, controlled before-and-after study. During a 15-month baseline, usual care was carried out in two areas. During the following 15-months, usual care continued in the control area, while residential care home staff implemented Liverpool Care Pathway for the Dying Patient use in the intervention area. The intervention was evaluated by family members completing retrospective symptom assessments after the patient's death, using the Edmonton Symptom Assessment System and Views of Informal Carers - Evaluation of Services. Settings/participants: Patients who died at all 19 residential care homes in one municipality in Sweden. Results: Shortness of breath (estimate=-2.46; 95% confidence interval=-4.43 to -0.49) and nausea (estimate=-1.83; 95% confidence interval=-3.12 to -0.54) were significantly reduced in Edmonton Symptom Assessment System in patients in the intervention compared to the control area. A statistically significant improvement in shortness of breath was also found on the Views of Informal Carers - Evaluation of Services item (estimate=-0.47; 95% confidence interval=-0.85 to -0.08). Conclusion: When implemented with adequate staff training and support, the Liverpool Care Pathway for the Dying Patient may be a useful tool for providing end-of-life care of elderly people at the end of life in non-cancer settings.
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67.
  • Byass, Peter, et al. (författare)
  • An integrated approach to processing WHO-2016 verbal autopsy data: the InterVA-5 model
  • 2019
  • Ingår i: BMC Med. - : BioMed Central. - 1741-7015. ; 17
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Verbal autopsy is an increasingly important methodology for assigning causes to otherwise uncertified deaths, which amount to around 50% of global mortality and cause much uncertainty for health planning. The World Health Organization sets international standards for the structure of verbal autopsy interviews and for cause categories that can reasonably be derived from verbal autopsy data. In addition, computer models are needed to efficiently process large quantities of verbal autopsy interviews to assign causes of death in a standardised manner. Here, we present the InterVA-5 model, developed to align with the WHO-2016 verbal autopsy standard. This is a harmonising model that can process input data from WHO-2016, as well as earlier WHO-2012 and Tariff-2 formats, to generate standardised cause-specific mortality profiles for diverse contexts. The software development involved building on the earlier InterVA-4 model, and the expanded knowledge base required for InterVA-5 was informed by analyses from a training dataset drawn from the Population Health Metrics Research Collaboration verbal autopsy reference dataset, as well as expert input. Results: The new model was evaluated against a test dataset of 6130 cases from the Population Health Metrics Research Collaboration and 4009 cases from the Afghanistan National Mortality Survey dataset. Both of these sources contained around three quarters of the input items from the WHO-2016, WHO-2012 and Tariff-2 formats. Cause-specific mortality fractions across all applicable WHO cause categories were compared between causes assigned in participating tertiary hospitals and InterVA-5 in the test dataset, with concordance correlation coefficients of 0.92 for children and 0.86 for adults. The InterVA-5 model's capacity to handle different input formats was evaluated in the Afghanistan dataset, with concordance correlation coefficients of 0.97 and 0.96 between the WHO-2016 and the WHO-2012 format for children and adults respectively, and 0.92 and 0.87 between the WHO-2016 and the Tariff-2 format respectively. Conclusions: Despite the inherent difficulties of determining "truth" in assigning cause of death, these findings suggest that the InterVA-5 model performs well and succeeds in harmonising across a range of input formats. As more primary data collected under WHO-2016 become available, it is likely that InterVA-5 will undergo minor re-versioning in the light of practical experience. The model is an important resource for measuring and evaluating cause-specific mortality globally.
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68.
  • Carcuac, Olivier, 1974, et al. (författare)
  • Spontaneous progression of experimental peri-implantitis in augmented and pristine bone. A pre-clinical in vivo study.
  • 2020
  • Ingår i: Clinical oral implants research. - 1600-0501. ; 31:2, s. 192-200
  • Tidskriftsartikel (refereegranskat)abstract
    • To examine progression of experimental peri-implantitis around different implants placed in augmented and pristine sites. M&M: 6 Labrador dogs were used. 3 months after tooth extraction, 4 implants with different surface modifications were installed on each side of the mandible. A standard osteotomy was applied on one side, while on the contralateral side the osteotomy was modified, resulting in a gap between the implant and the bone wall. The gap was filled with a bone substitute and covered by a resorbable membrane. 3 months after implant installation, implants were exposed and healing abutments were connected. 2 months later, oral hygiene procedures were abandoned and a cotton ligature was placed in a submarginal position around the neck of all implants and kept in place for 4 weeks. Following ligature removal, plaque formation continued for 6 months (spontaneous progression period). Radiographs were obtained throughout the experiment and biopsies were collected and prepared for histological evaluation at the end of the spontaneous progression period.Differences in bone loss during the spontaneous progression period between pristine and augmented sites were small. The size and vertical dimension of the peri-implantitis lesion were larger at augmented than at pristine sites. Implants with non-modified surfaces exhibited smaller amounts of bone loss and smaller dimensions of peri-implantitis lesions than implants with modified surfaces.Small differences in spontaneous progression of peri-implantitis were detected between pristine and augmented sites. Implants with modified surfaces exhibited more bone loss and larger lesions than implants with non-modified surfaces, irrespective of the type of surrounding bone.
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69.
  • Carcuac, Olivier, 1974, et al. (författare)
  • Surgical treatment of peri-implantitis: 3-year results from a randomized controlled clinical trial.
  • 2017
  • Ingår i: Journal of clinical periodontology. - 1600-051X. ; 44:12, s. 1294-1303
  • Tidskriftsartikel (refereegranskat)abstract
    • This study reports on the 3-year follow-up of patients enrolled in a randomized controlled clinical trial on surgical treatment of advanced peri-implantitis.A total of 100 patients with advanced peri-implantitis were randomly assigned to one of four treatment groups. Surgical therapy aiming at pocket elimination was performed and, in three test groups, supplemented by either systemic antibiotics, use of an antiseptic agent for implant surface decontamination or both. Outcomes were evaluated after 1 and 3 years by means of clinical and radiological examinations. Differences between groups were explored by regression analysis.Clinical examinations at 3 years after treatment revealed (i) improved peri-implant soft tissue health with a mean reduction in probing depth of 2.7 mm and a reduction in bleeding/suppuration on probing of 40% and (ii) stable peri-implant marginal bone levels (mean bone loss during follow-up: 0.04 mm). Implant surface characteristics had a significant impact on 3-year outcomes, in favour of implants with non-modified surfaces. Benefits of systemic antibiotics were limited to implants with modified surfaces and to the first year of follow-up.It is suggested that surgical treatment of peri-implantitis is effective and that outcomes of therapy are affected by implant surface characteristics. Potential benefits of systemic antibiotics are not sustained over 3 years.
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70.
  • Carlzon, Daniel, et al. (författare)
  • Both Low and High Serum Insulin-like Growth Factor-I Levels Associate with Increased Risk of Cardiovascular Events in Elderly Men.
  • 2014
  • Ingår i: The Journal of clinical endocrinology and metabolism. - 1945-7197. ; 99:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: Most previous prospective studies suggest that low serum insulin-like growth factor-I (IGF-I) associates with increased risk of cardiovascular disease (CVD) events while other studies suggest that high serum IGF-I associates with increased risk of CVD events. We tested the hypothesis that not only low, but also high, serum IGF-I associate with increased risk of CVD events in elderly men. Methods and Results: Serum IGF-I levels were measured in 2901 elderly men (aged 69 to 81 years) included in the prospective population-based MrOS-Sweden cohort. Data for CVD events were obtained from national Swedish registers with no loss of follow-up. During follow-up (median 5.1 yrs) 589 of the participants experienced a CVD event. The association between serum IGF-I and risk of CVD events was nonlinear, and restricted cubic spline Cox regression analysis revealed a U-shaped association between serum IGF-I levels and CVD events (p<0.01 for nonlinearity). Low as well as high serum IGF-I (quintile 1 or 5 vs. quintiles 2-4) significantly associated with increased risk for CVD events (hazard ratio (HR) = 1.25, 95% confidence interval (CI) 1.02-1.54; and HR = 1.35, 95% CI 1.10-1.66, respectively). These associations remained after adjustment for prevalent CVD and multiple risk factors. High serum IGF-I associated with increased risk of coronary heart disease (CHD) events but not with risk of cerebrovascular events. Conclusion: Both low and high serum IGF-I levels are risk markers for CVD events in elderly men. The association between high serum IGF-I and CVD events is mainly driven by CHD events.
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