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- Culverhouse, R. C., et al.
(författare)
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Collaborative meta-analysis finds no evidence of a strong interaction between stress and 5-HTTLPR genotype contributing to the development of depression
- 2018
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Ingår i: Molecular Psychiatry. - : Springer Science and Business Media LLC. - 1359-4184 .- 1476-5578. ; 23:1, s. 133-142
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Tidskriftsartikel (refereegranskat)abstract
- The hypothesis that the S allele of the 5-HTTLPR serotonin transporter promoter region is associated with increased risk of depression, but only in individuals exposed to stressful situations, has generated much interest, research and controversy since first proposed in 2003. Multiple meta-analyses combining results from heterogeneous analyses have not settled the issue. To determine the magnitude of the interaction and the conditions under which it might be observed, we performed new analyses on 31 data sets containing 38 802 European ancestry subjects genotyped for 5-HTTLPR and assessed for depression and childhood maltreatment or other stressful life events, and meta-analysed the results. Analyses targeted two stressors (narrow, broad) and two depression outcomes (current, lifetime). All groups that published on this topic prior to the initiation of our study and met the assessment and sample size criteria were invited to participate. Additional groups, identified by consortium members or self-identified in response to our protocol (published prior to the start of analysis) with qualifying unpublished data, were also invited to participate. A uniform data analysis script implementing the protocol was executed by each of the consortium members. Our findings do not support the interaction hypothesis. We found no subgroups or variable definitions for which an interaction between stress and 5-HTTLPR genotype was statistically significant. In contrast, our findings for the main effects of life stressors (strong risk factor) and 5-HTTLPR genotype (no impact on risk) are strikingly consistent across our contributing studies, the original study reporting the interaction and subsequent meta-analyses. Our conclusion is that if an interaction exists in which the S allele of 5-HTTLPR increases risk of depression only in stressed individuals, then it is not broadly generalisable, but must be of modest effect size and only observable in limited situations.
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| 2. |
- Andersson Hagiwara, Magnus, et al.
(författare)
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Adverse events in prehospital emergency care: A trigger tool study
- 2019
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Ingår i: BMC Emergency Medicine. - : Springer Science and Business Media LLC. - 1471-227X. ; 19:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Prehospital emergency care has developed rapidly during the past decades. The care is given in a complex context which makes prehospital care a potential high-risk activity when it comes to patient safety. Patient safety in the prehospital setting has been only sparsely investigated. The aims of the present study were 1) To investigate the incidence of adverse events (AEs) in prehospital care and 2) To investigate the factors contributing to AEs in prehospital care. Methods: We used a retrospective study design where 30 randomly selected prehospital medical records were screened for AEs each month in three prehospital organizations in Sweden during a period of one year. A total of 1080 prehospital medical records were included. The record review was based on the use of 11 screening criteria. Results: The reviewers identified 46 AEs in 46 of 1080 (4.3%) prehospital medical records. Of the 46 AEs, 43 were classified as potential for harm (AE1) (4.0, 95% CI = 2.9-5.4) and three as harm identified (AE2) (0.3, 95% CI = 0.1-0.9). However, among patients with a life-threatening condition (priority 1), the risk of AE was higher (16.5%). The most common factors contributing to AEs were deviations from standard of care and missing, incomplete, or unclear documentation. The most common cause of AEs was the result of action(s) or inaction(s) by the emergency medical service (EMS) crew. Conclusions: There were 4.3 AEs per 100 ambulance missions in Swedish prehospital care. The majority of AEs originated from deviations from standard of care and incomplete documentation. There was an increase in the risk of AE among patients who the EMS team assessed as having a life-threatening condition. Most AEs were possible to avoid. © 2019 The Author(s).
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| 3. |
- Hedberg, P., et al.
(författare)
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Mitral annulus motion as a predictor of mortality in a community-based sample of 75-year-old men and women
- 2006
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Ingår i: Journal of the American Society of Echocardiography. - : Elsevier BV. - 0894-7317 .- 1097-6795. ; 19:1, s. 88-94
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Tidskriftsartikel (refereegranskat)abstract
- Mitral annulus motion (MAM) is a predictor of mortality in selected patient groups, but its prognostic value in less selected populations is not known. In a community-based random sample of 75-year-old men and women (n = 408), left ventricular function was measured as: (1) maximum amplitude of MAM; and (2) wall-motion index. During a median follow-up of 7.2 years, 83 persons died (26 from cardiac causes). Left ventricular function as measured by MAM predicted the risk of all-cause and cardiac mortality independently of other potential risk factors in this community-based sample. Regarding cardiac mortality, the predictive ability of MAM was also independent of left ventricular systolic function measured as wall-motion index. MAM may prove to be a valuable complement to other echocardiographic methods in the assessment of prognosis in less selected populations.
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| 4. |
- Jervaeus, Anna, et al.
(författare)
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Exploring childhood cancer survivors' views about sex and sexual experiences -findings from online focus group discussions.
- 2016
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Ingår i: European Journal of Oncology Nursing. - : Elsevier BV. - 1462-3889 .- 1532-2122. ; 20, s. 165-172
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: To explore childhood cancer survivors' views about sex and sexual experiences and, as an additional aim, their possible needs for care and support from health care professionals regarding sexual life.METHODS: Written online focus group discussions were performed with survivors of childhood cancer, identified through the Swedish Childhood Cancer Registry; 133 (36%; aged 16-25) participated. Written text was analysed using qualitative content analysis.RESULTS: The analysis resulted in one main category: Could my cancer experience have an impact on my sexual life? with four generic categories: Sex considered to be good, Feeling insecure and falling behind, Relating sex to a stable relationship and Concerns related to the physical body. In general, participants had not reflected on the possibility that their cancer experience could impact on sexual life. Sex was often considered to be something natural, important and taken for granted. However, thoughts and worries were expressed including being shy, feeling insecure and falling behind peers. Physical concerns included vaginal dryness and difficulties related to erection and reaching orgasm. Many participants stated that sexual issues had not been discussed with health care professionals, however, the need for such support differed.CONCLUSIONS: Many of the childhood cancer survivors' did not relate their sexual experiences to previous cancer treatment. However, problems were expressed, both of emotional and physical nature. Many participants stated that they had not received any information or support regarding sexual issues from health care professionals, why it is recommended to be regularly addressed in follow-up care.
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| 5. |
- Nilsson, J., et al.
(författare)
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'Will I be able to have a baby?' Results from online focus group discussions with childhood cancer survivors in Sweden
- 2014
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Ingår i: Human Reproduction. - : Oxford University Press. - 0268-1161 .- 1460-2350. ; 29:12, s. 2704-2711
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Tidskriftsartikel (refereegranskat)abstract
- STUDY QUESTION: What do adolescent and young adult survivors of childhood cancer think about the risk of being infertile?SUMMARY ANSWER: The potential infertility, as well as the experience of having had cancer, affects well-being, intimate relationships and the desire to have children in the future.WHAT IS KNOWN ALREADY: Many childhood cancer survivors want to have children and worry about possible infertility.STUDY DESIGN, SIZE, DURATION: For this qualitative study with a cross-sectional design, data were collected through 39 online focus group discussions during 2013.PARTICIPANTS/MATERIALS, SETTING, METHODS: Cancer survivors previously treated for selected diagnoses were identified from The Swedish Childhood Cancer Register (16-24 years old at inclusion, ≥5 years after diagnosis) and approached regarding study participation. Online focus group discussions of mixed sex (n = 133) were performed on a chat platform in real time. Texts from the group discussions were analysed using qualitative content analysis.MAIN RESULTS AND THE ROLE OF CHANCE: The analysis resulted in the main category Is it possible to have a baby? including five generic categories: Risk of infertility affects well-being, Dealing with possible infertility, Disclosure of possible infertility is a challenge, Issues related to heredity and Parenthood may be affected. The risk of infertility was described as having a negative impact on well-being and intimate relationships. Furthermore, the participants described hesitation about becoming a parent due to perceived or anticipated physical and psychological consequences of having had cancer.LIMITATIONS, REASONS FOR CAUTION: Given the sensitive topic of the study, the response rate (36%) is considered acceptable. The sample included participants who varied with regard to received fertility-related information, current fertility status and concerns related to the risk of being infertile.WIDER IMPLICATIONS OF THE FINDINGS: The results may be transferred to similar contexts with other groups of patients of childbearing age and a risk of impaired fertility due to disease. The findings imply that achieving parenthood, whether or not with biological children, is an area that needs to be addressed by health care services.STUDY FUNDING/COMPETING INTERESTS: The study was financially supported by The Cancer Research Foundations of Radiumhemmet, The Swedish Childhood Cancer Foundation and the Doctoral School in Health Care Science, Karolinska Institutet. The authors report no conflicts of interest.
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| 6. |
- Ning, Yilin, et al.
(författare)
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Handling ties in continuous outcomes for confounder adjustment with rank-ordered logit and its application to ordinal outcomes
- 2020
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Ingår i: Statistical Methods in Medical Research. - : SAGE Publications. - 0962-2802 .- 1477-0334. ; 29:2, s. 437-454
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Tidskriftsartikel (refereegranskat)abstract
- The rank-ordered logit (rologit) model was recently introduced as a robust approach for analysing continuous outcomes, with the linear exposure effect estimated by scaling the rank-based log-odds estimate. Here we extend the application of the rologit model to continuous outcomes with ties and ordinal outcomes treated as imperfectly-observed continuous outcomes. By identifying the functional relationship between survival times and continuous outcomes, we explicitly establish the equivalence between the rologit and Cox models to justify the use of the Breslow, Efron and perturbation methods in the analysis of continuous outcomes with ties. Using simulation, we found all three methods perform well with few ties. Although an increasing extent of ties increased the bias of the log-odds and linear effect estimates and resulted in reduced power, which was somewhat worse when the model was mis-specified, the perturbation method maintained a type I error around 5%, while the Efron method became conservative with heavy ties but outperformed Breslow. In general, the perturbation method had the highest power, followed by the Efron and then the Breslow method. We applied our approach to three real-life datasets, demonstrating a seamless analytical workflow that uses stratification for confounder adjustment in studies of continuous and ordinal outcomes.
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