I urval från Stockholms universitets publikationsdatabas

• Latent class trajectories of socioeconomic position over four time points and mortality: the Uppsala Birth Cohort Study

  2022. Muhammad Zakir Hossin (et al.). European Journal of Public Health 32 (4), 522-527

  Artikel

  Background: The study assessed socioeconomic position (SEP) over four time points and employed a latent class analysis (LCA) to explore the associations between longitudinal SEP trajectories and late-life mortality. Methods: We analyzed a cohort of 11 336 members born at the Uppsala University Hospital, Sweden during 1915–29 and followed up for mortality during 1980–2008. SEP was measured at birth, age 10, mid-adulthood and late adulthood. LCA was used to identify SEP trajectories, which were linked to all-cause and cause-specific mortality through Cox proportional hazard regression models. Results: The age and birth cohort adjusted hazard ratio (HR) of all-cause mortality among the upwardly mobile from middle vs. stable low SEP was 28% lower in men [HR: 0.72; 95% confidence interval (95% CI): 0.65, 0.81] and 30% lower in women (HR: 0.70; 95% CI: 0.62, 0.78). The corresponding HR of cardiovascular mortality was 30% lower in men (HR: 0.70; 95% CI: 0.60, 0.82) and 31% lower in women (HR: 0.69; 95% CI: 0.58, 0.83). Upward mobility was also associated with decreased HR of mortality from respiratory diseases and injuries among men and from cancer, respiratory diseases, injuries and mental disorders among women. The upwardly mobile were similar to the stable high group in terms of their HRs of mortality from all-causes and cardiovascular, cancer and mental diseases. Conclusions: Upward mobility appeared to be protective of mortality from a wide range of causes. Interventions aiming to prevent deaths can benefit from creating optimal conditions earlier in the life course, letting disadvantaged children maximize their socioeconomic and health potentials.

  Läs mer om Latent class trajectories of socioeconomic position over four time points and mortality

• A divisive hierarchical clustering methodology for enhancing the ensemble prediction power in large scale population studies: the ATHLOS project

  2022. Petros Barmpas (et al.). Health Information Science and Systems 10 (1)

  Artikel

  The ATHLOS cohort is composed of several harmonized datasets of international groups related to health and aging. As a result, the Healthy Aging index has been constructed based on a selection of variables from 16 individual studies. In this paper, we consider additional variables found in ATHLOS and investigate their utilization for predicting the Healthy Aging index. For this purpose, motivated by the volume and diversity of the dataset, we focus our attention upon data clustering, where unsupervised learning is utilized to enhance prediction power. Thus we show the predictive utility of exploiting hidden data structures. In addition, we demonstrate that imposed computation bottlenecks can be surpassed when using appropriate hierarchical clustering, within a clustering for ensemble classification scheme, while retaining prediction benefits. We propose a complete methodology that is evaluated against baseline methods and the original concept. The results are very encouraging suggesting further developments in this direction along with applications in tasks with similar characteristics. A straightforward open source implementation for the R project is also provided (https://github.com/Petros-Barmpas/HCEP).

  Läs mer om A divisive hierarchical clustering methodology for enhancing the ensemble prediction power in large scale population studies

• Psychiatric comorbidity among women with endometriosis

  2020. Menghan Gao (et al.). American Journal of Obstetrics and Gynecology 223 (3), 415.e1-415.e16

  Artikel

  Background  Endometriosis is a common gynecologic condition affecting women of reproductive age. It has been linked with greater rates of depression and anxiety in small, cross-sectional, and clinical studies. Other studies have reported that women with endometriosis have increased risk of bipolar disorder. These reports suggest that psychiatric disorders might be more common among women with endometriosis, contributing to increased burden of mental ill-health in this population of women. However, this hypothesis has not been adequately studied.

  Objectives  In this population-based study, we investigated the overall psychiatric comorbidity among women with endometriosis, and the role of familial liability.

  Study Design  Several Swedish national registers were linked and used to follow all women born in Sweden in 1973–1990 for diagnosed psychiatric disorders and endometriosis from age 14 years until year 2016. Sibling comparison analyses were performed in a subsample of 173,650 families.

  Results  After adjustment for birth characteristics and education, women with endometriosis had an increased risk of being later diagnosed with depressive-, anxiety and stress-related disorders, alcohol/drug dependence, and attention-deficit hyperactivity disorder compared with the general population and with their sisters without endometriosis. The adjusted hazard ratios ranged from 1.56 (95% confidence interval, 1.29–1.88) for depressive disorders to 1.98 (95% confidence interval, 1.34–2.93) for attention-deficit hyperactivity disorder in the sibling analysis. Also, women with previous affective psychotic disorders, depressive-, anxiety and stress-related disorders, eating disorders, personality disorders, and attention-deficit hyperactivity disorder were more likely to be later diagnosed with endometriosis. The adjusted hazard ratios ranged from 1.51 (95% confidence interval, 1.30–1.76) for depressive disorders to 1.93 (95% confidence interval, 1.47–2.52) for personality disorders.

  Conclusion  These findings reveal a high degree of comorbidity between endometriosis and many psychiatric disorders that was not entirely explained by shared familial confounding. Clinical practice may consider psychosocial support to women with endometriosis and treating them from a multidisciplinary perspective.

  Läs mer om Psychiatric comorbidity among women with endometriosis

• Education and wealth inequalities in healthy ageing in eight harmonised cohorts in the ATHLOS consortium

  2020. Yu-Tzu Wu (et al.). The Lancet Public Health 5 (7), e386-e394

  Artikel

  BACKGROUND: The rapid growth of the size of the older population is having a substantial effect on health and social care services in many societies across the world. Maintaining health and functioning in older age is a key public health issue but few studies have examined factors associated with inequalities in trajectories of health and functioning across countries. The aim of this study was to investigate trajectories of healthy ageing in older men and women (aged ≥45 years) and the effect of education and wealth on these trajectories.

  METHODS: This population-based study is based on eight longitudinal cohorts from Australia, the USA, Japan, South Korea, Mexico, and Europe harmonised by the EU Ageing Trajectories of Health: Longitudinal Opportunities and Synergies (ATHLOS) consortium. We selected these studies from the repository of 17 ageing studies in the ATHLOS consortium because they reported at least three waves of collected data. We used multilevel modelling to investigate the effect of education and wealth on trajectories of healthy ageing scores, which incorporated 41 items of physical and cognitive functioning with a range between 0 (poor) and 100 (good), after adjustment for age, sex, and cohort study.

  FINDINGS: We used data from 141 214 participants, with a mean age of 62·9 years (SD 10·1) and an age range of 45-106 years, of whom 76 484 (54·2%) were women. The earliest year of baseline data was 1992 and the most recent last follow-up year was 2015. Education and wealth affected baseline scores of healthy ageing but had little effect on the rate of decrease in healthy ageing score thereafter. Compared with those with primary education or less, participants with tertiary education had higher baseline scores (adjusted difference in score of 10·54 points, 95% CI 10·31-10·77). The adjusted difference in healthy ageing score between lowest and highest quintiles of wealth was 8·98 points (95% CI 8·74-9·22). Among the eight cohorts, the strongest inequality gradient for both education and wealth was found in the Health Retirement Study from the USA.

  INTERPRETATION: The apparent difference in baseline healthy ageing scores between those with high versus low education levels and wealth suggests that cumulative disadvantage due to low education and wealth might have largely deteriorated health conditions in early life stages, leading to persistent differences throughout older age, but no further increase in ageing disparity after age 70 years. Future research should adopt a lifecourse approach to investigate mechanisms of health inequalities across education and wealth in different societies.

  FUNDING: European Union Horizon 2020 Research and Innovation Programme.

  Läs mer om Education and wealth inequalities in healthy ageing in eight harmonised cohorts in the ATHLOS consortium

• Early-life social and health determinants of adult socioeconomic position

  2020. Muhammad Zakir Hossin, Jonas Björk, Ilona Koupil. Journal of Epidemiology and Community Health 74 (5), 412-420

  Artikel

  Background Social and biological circumstances at birth are established predictors of adult socioeconomic position (SEP). This study aims to assess the trends in these associations across two generations and examine the effects of parental early-life characteristics on descendants' adult SEP.

  Methods We studied men and women born in the Uppsala University Hospital 1915-1929 (G1) and their offspring born 1932-1960 (G2). Data were collected in archives and routine registers. Adult SEP was assessed as an aggregate measure combining education and occupation. The exposures were family SEP, mother's marital status, mother's parity, mother's age, standardised birth weight, gestational length and birth multiplicity. Linear regression was used to examine the associations across generations.

  Results The difference in adult SEP between low and high family SEP at birth was 15.8 (95% CI: 13.3 to 18.3) percentage points smaller in G2 compared with G1, although a considerable difference was still evident in G2. The associations of adult SEP with small birth weight for gestational age, post-term birth and high parity were stable between the generations: the generational differences in adjusted coefficients were 1.5 (95% CI: -1.1 to 4.1), 0.6 (-1.7 to 2.9) and 1.8 (-0.2 to 3.8) percentage points, respectively. The association between grandparental and grandchildren's SEPs was largely explained by parental socioeconomic conditions. Father's preterm birth was independently associated with offspring's SEP.

  Conclusion The stability of the associations between early-life biological disadvantages and adult SEP and the persistent, although attenuated, association between early-life and adult SEPs necessitates increased policy attention to both social and health conditions at birth.

  Läs mer om Early-life social and health determinants of adult socioeconomic position

• Rationale for a Swedish cohort consortium

  2019. Johan Sundström (et al.). Upsala Journal of Medical Sciences 124 (1), 21-28

  Artikel

  We herein outline the rationale for a Swedish cohort consortium, aiming to facilitate greater use of Swedish cohorts for world-class research. Coordination of all Swedish prospective population-based cohorts in a common infrastructure would enable more precise research findings and facilitate research on rare exposures and outcomes, leading to better utilization of study participants' data, better return of funders' investments, and higher benefit to patients and populations. We motivate the proposed infrastructure partly by lessons learned from a pilot study encompassing data from 21 cohorts. We envisage a standing Swedish cohort consortium that would drive development of epidemiological research methods and strengthen the Swedish as well as international epidemiological competence, community, and competitiveness.

  Läs mer om Rationale for a Swedish cohort consortium

• MatCH (Mothers and their Children's Health) Profile

  2018. Gita D. Mishra (et al.). Longitudinal and life course studies 9 (3), 351-375

  Artikel

  MatCH (Mothers and their Children's Health) is a nationwide Australian study to investigate the links between the history of health, wellbeing and living conditions of mothers and the health and development of their children. MatCH builds on the Australian Longitudinal Study on Women's Health (ALSWH), which began in 1996 and has surveyed more than 58,000 women in four nationally representative age cohorts. MatCH focuses on the three youngest offspring of the cohort of ALSWH participants randomly sampled from all women in Australia born in 1973-78 (N=5780 children of N=3039 mothers). These women, who had completed up to seven postal or online surveys since 1996, were invited in 2016-17 to complete surveys about the health and development of their three youngest children aged under 13. The mothers reported on their children's health conditions and symptoms, diet, anthropometric measures, childcare, screen time, physical activity, temperament, behaviour, language development, motor development and health service utilisation, as well as household and environmental factors. These data are being linked with each child's records from official sources including the Australian Early Development Census (collected at age five to six), the National Assessment Program-Literacy and Numeracy (collected at age eight, 10, 12 and 14) and other external datasets. MatCH will combine 20 years of maternal data with all the information on her children, taking into account the family setting. MatCH offers an unprecedented opportunity to advance our understanding of the relationship between maternal health and wellbeing and child health and development.

  Läs mer om MatCH (Mothers and their Children's Health) Profile

• Social patterning of overeating, binge eating, compensatory behaviours and symptoms of bulimia nervosa in young adult women

  2016. Ilona Koupil (et al.). Public Health Nutrition 19 (17), 3158-3168

  Artikel

  Objective To study social patterning of overeating and symptoms of disordered eating in a general population.

  Design A representative, population-based cohort study.

  Setting The Australian Longitudinal Study on Women’s Health (ALSWH), Survey 1 in 1996 and Survey 2 in 2000.

  Subjects Women (n 12 599) aged 18–23 years completed a questionnaire survey at baseline, of whom 6866 could be studied prospectively.

  Results Seventeen per cent of women reported episodes of overeating, 16 % reported binge eating and 10 % reported compensatory behaviours. Almost 4 % of women reported symptoms consistent with bulimia nervosa. Low education, not living with family, perceived financial difficulty (OR=1·8 and 1·3 for women with severe and some financial difficulty, respectively, compared with none) and European language other than English spoken at home (OR=1·5 for European compared with Australian/English) were associated with higher prevalence of binge eating. Furthermore, longitudinal analyses indicated increased risk of persistent binge eating among women with a history of being overweight in childhood, those residing in metropolitan Australia, women with higher BMI, smokers and binge drinkers.

  Conclusions Overeating, binge eating and symptoms of bulimia nervosa are common among young Australian women and cluster with binge drinking. Perceived financial stress appears to increase the risk of binge eating and bulimia nervosa. It is unclear whether women of European origin and those with a history of childhood overweight carry higher risk of binge eating because of genetic or cultural reasons.

  Läs mer om Social patterning of overeating, binge eating, compensatory behaviours and symptoms of bulimia nervosa in young adult women

• Family history of education predicts eating disorders across multiple generations among 2 million Swedish males and females

  2014. Anna Goodman, Amy Frances Heshmati, Ilona Koupil. PLoS ONE 9 (8), e106475

  Artikel

  Purpose To investigate which facets of parent and grandparent socio-economic position (SEP) are associated with eating disorders (ED), and how this varies by ED subtype and over time.

  Methods Total-population cohort study of 1,040,165 females and 1,098,188 males born 1973-1998 in Sweden, and followed for inpatient or outpatient ED diagnoses until 2010. Proportional hazards models estimated associations with parental education, income and social class, and with grandparental education and income.

  Results 15,747 females and 1051 males in our sample received an ED diagnosis, with rates increasing in both sexes over time. ED incidence in females was independently predicted by greater educational level among the father, mother and maternal grandparents, but parent social class and parental income showed little or no independent effect. The associations with education were equally strong for anorexia nervosa, bulimia nervosa and ED not-otherwise-specified, and had increased over time. Among males, an apparently similar pattern was seen with respect to anorexia nervosa, but non-anorexia ED showed no association with parental education and an inverse association with parental income.

  Conclusions Family history of education predicts ED in gender- and disorder-specific ways, and in females the effect is observed across multiple generations. Particularly given that these effects may have grown stronger in more recent cohorts, these findings highlight the need for further research to clarify the underlying mechanisms and identify promising targets for prevention. Speculatively, one such mechanism may involve greater internal and external demands for academic success in highly educated families.

  Läs mer om Family history of education predicts eating disorders across multiple generations among 2 million Swedish males and females

• Socio-economic position over the life course and all-cause, and circulatory diseases mortality at age 50-87 years

  2013. Gita Devi Mishra (et al.). European Journal of Epidemiology 28 (2), 139-147

  Artikel

  Both child and adult socio-economic position (SEP) predict adult mortality, but little is known about the variation in the impact of SEP across the life course. The Uppsala Birth Cohort Study is a representative birth cohort born 1915–1929 in Uppsala, Sweden. For the 5,138 males and 5,069 females alive in 1980, SEP was available at birth; in adulthood (age 31–45); and in later life (age 51–65). Follow-up for mortality (all-cause, and circulatory disease) was from 1980 to 2002. To test which life course model best described the association between SEP and mortality, we compared the fit of a series of nested Cox proportional hazards regression models (representing either the critical, accumulation or sensitive period models) with a fully saturated model. For all-cause mortality in both genders, the sensitive period model best described the influence of SEP across the life course with a heightened effect in later adult life (males: Hazard Ratio (95 % CI) for advantaged SEP: 0.89 (0.81–0.97) at birth, 0.90 (0.81–0.98) in adulthood, 0.74 (0.67–0.82) in later life; females: 0.87 (0.78–0.98), 0.95 (0.86–1.06), 0.73 (0.64–0.83)). The effect of SEP on circulatory diseases mortality in males was cumulative (HR: 0.84 (0.80–0.87) per unit time in advantaged SEP). For circulatory disease mortality among females, a sensitive period model was selected due to SEP in later adult life (HR: 0.64 (0.52–0.80)). These findings suggest that reducing inequality throughout the life course might reduce all-cause and circulatory disease mortality.

  Läs mer om Socio-economic position over the life course and all-cause, and circulatory diseases mortality at age 50-87 years

Visa alla publikationer av Ilona Grünberger vid Stockholms universitet