Cohort Profile: The Norwegian Life Course, Ageing and Generation Study (NorLAG).
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ABSTRACT:
SUBMITTER: Veenstra M
PROVIDER: S-EPMC8271209 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:PurposeThe Norwegian Survey of Health and Ageing (NORSE) was set up to provide internationally comparable data on ageing in Norway, which includes measured intrinsic capacity and cognitive function.ParticipantsNORSE is a population-based health examination study of seniors aged 60+ from the 1921-1958 birth cohorts in the former Norwegian county of Oppland, interviewed and examined during 2017-19 (N = 957, 16% response rate). NORSE is to some extent based on the SHARE-questionnaire ( share-project.org ), which includes work-related information, self-assessed and retrospective health, and expectations on longevity, quality of life, volunteering activities, consumption, and financial arrangements. In addition, several objective measures of intrinsic and cognitive capacity are included in NORSE.Findings to dateA shorter preferred life expectancy (PLE) was found to be associated with the prospects of a life with dementia and chronic pain. Motivation for retirement was found to be related to work-life experience and health. Social media was mostly used in the younger age groups and there was a tendency towards more use in the higher educational groups. NORSE incorporates questions on religion, and older women tend to have a higher degree of religiosity (proxied as self-assessed religiosity) than men in their 80s, but more similar (and lower levels) among those in their 60s.Future plansNORSE participants have allowed their data to be linked to National registry data and midlife health examination studies and thereby provide a longitudinal design as well as information on disability status, socioeconomic status, household and marital status, support to/from children and parents, and pension status.
| S-EPMC8653560 | biostudies-literature
Project description:PURPOSE:The Danish Work Life Course Cohort (DaWCo) was initiated to study relations between working conditions, health and labour market affiliation using repeated measures of these factors throughout the working life, while accounting for health-differences pre-existing labour market entry. PARTICIPANTS:The cohort encompasses all 15-30-year-old individuals residing in Denmark who entered the labour market during the years 1995-2009 (960 562 individuals and 7 136 188 observations). Data include information on working conditions measured by job exposure matrices linked with registers on health, labour market affiliation and sociodemographics for both the cohort members and their parents. The median age at cohort entry was 20 years and men and women were equally represented. FINDINGS TO DATE:Currently, one study has been published, which found that low job control was associated with increased risk of depressive disorder, independently from indicators of socioeconomic position measured throughout the life-course. The present cohort profile presents data regarding the transitions of cohort members between states of labour market affiliation and data on health services use. All cohort members were employed in their year of entry, but this proportion decreased across the years to 82.4% in the 10th year since cohort entry. The proportion of students peaked at 5 years since cohort entry with 13.9%. FUTURE PLANS:This large prospective cohort offers the possibility to study associations between psychosocial working conditions and rare outcomes and to examine the potential accumulation of effects while accounting for health-differences pre-existing labour market entry. Currently, we are working on analyses on risk of hospital-diagnosed incident depression and disability pensioning. The study is ongoing, and we are planning to extend the study to include the years 2010-2018 and expand the cohort with individuals entering the Danish workforce during these years.
| S-EPMC6887026 | biostudies-literature
Project description:PurposeThe Chinese Longitudinal Healthy Longevity Survey Biomarkers Cohort (Healthy Ageing and Biomarkers Cohort Study (HABCS)) was established to investigate the determinants of healthy aging and mortality among the oldest old in China. Besides collecting health status, behavioural and sociodemographic circumstances, the present study also gathers comprehensive data for the elderly by simultaneously collecting, detecting, analysing blood and urine, respectively.ParticipantsHABCS is a community-based longitudinal multiwave study of older men and women aged 65 or above. Baseline survey and the follow-up surveys with replacement for deceased elderly were conducted in eight longevity areas in China, which cover the northern, middle and southern parts of China. Between 2008 and 2017, 6333 participants were included in HABCS, comprising 1385 centenarians, 1350 nonagenarians, 1294 octogenarians, 1577 younger elderly (aged 65-79).Findings to dateWe have found that higher baseline levels of (1) total cholesterol, (2) low-density lipoprotein cholesterol (LDL-C) and (3) superoxide dismutase activity were associated with greater cognitive decline. While (4) higher LDL-C level was associated with lower risk of all-cause mortality. There was a reverse association between (5) plasma vitamin D and cognitive impairment in cross-sectional and prospective study.Future plansWe are currently exploring the relationships between various biomarkers and different outcomes such as cognitive function and mortality. This longitudinal cohort study will be continued in the future.
| S-EPMC6797363 | biostudies-literature
Project description:PurposeExposure to childhood maltreatment is not uncommon, and is linked to both short-term and long-term health problems. Population-based surveys for adolescent samples provide excellent opportunities for addressing the substantial burden of early-life adversities, because collecting information close in time to exposure may increase accuracy of assessment. Still few large studies have been conducted, following individuals through adolescence. Therefore, the UEVO cohort was created with the aim of investigating prevalence of child maltreatment throughout childhood and adolescence, and its effects on health and functioning in a long-term perspective in a representative sample of Norwegian adolescents.ParticipantsThe baseline for the cohort includes a representative sample of 9240 Norwegian adolescents (response rate 86.6%) aged 12-16 years, surveyed in January and February 2019. The cohort to be followed over time comprises the 5502 adolescents who agreed to be recontacted for subsequent data collection waves.Findings to dateThe overall prevalence figures from the first wave of measurement have been published in a comprehensive national report on child maltreatment in Norway.Future plansA second study wave will commence in 2021, including about half of the original cohort (longitudinal), as well as a new sample starting at age 12. For participants above age 16, original survey data will be connected to national registries (pending indvidual consent), enabling the study of real-life functioning within the areas of healthcare utilisation, school drop-out, work-force participation and prescription of medication.
| S-EPMC7451483 | biostudies-literature
Project description: Not available
| S-EPMC8128454 | biostudies-literature
Project description:AimsAs populations are ageing worldwide, it is important to identify strategies to promote successful ageing. We investigate how working conditions throughout working life are associated with successful ageing in later life.MethodsData from two nationally representative longitudinal Swedish surveys were linked (n=674). In 1991, respondents were asked about their first occupation, occupations at ages 25, 30, 35, 40, 45 and 50 years and their last recorded occupation. Occupations were matched with job exposure matrices to measure working conditions at each of these time points. Random effects growth curve models were used to calculate intra-individual trajectories of working conditions. Successful ageing, operationalised using an index including social and leisure activity, cognitive and physical function and the absence of diseases, was measured at follow-up in 2014 (age 70 years and older). Multivariable ordered logistic regressions were used to assess the association between trajectories of working conditions and successful ageing.ResultsIntellectually stimulating work; that is, substantive complexity, in the beginning of one's career followed by an accumulation of more intellectually stimulating work throughout working life was associated with higher levels of successful ageing. In contrast, a history of stressful, hazardous or physically demanding work was associated with lower levels of successful ageing.Conclusions
| S-EPMC9203674 | biostudies-literature
Project description:In Switzerland, as in many other European states, there is an increasing emphasis in public policy on promoting later retirement from the labour market. But this accelerating drive in Swiss policy-making to extend occupational activity does not mean that every worker is currently likely to retire late, nor does it imply that all those who do retire late do so voluntarily. This article uses a life-course approach, first to study the determinants of late retirement, and secondly to analyse whether the decision to postpone retirement is made voluntarily or involuntarily. Both objectives are addressed on the basis of data from the Swiss survey Vivre/Leben/Vivere. The results of logistic regression modelling indicate that, whereas self-employed and more highly educated individuals are more likely to retire late, people with access to private pension funds and workers who have benefited from periods of economic growth have a lower tendency to retire late. Regarding voluntariness, those who are more likely to opt for voluntary late retirement tend to be Swiss citizens, more highly educated, and also benefited from periods of economic expansion, while the self-employed, men and widowed individuals leaving the labour market late tend to do so involuntarily. In conclusion, the article discusses the absence of a social inequality debate in the design of active ageing policies.
| S-EPMC5549162 | biostudies-other
Project description:ObjectivesEarly life factors, like intelligence and socioeconomic status (SES), are associated with health outcomes in adulthood. Fitting comprehensive life-course models, we tested (1) the effect of childhood intelligence and SES, education and adulthood SES on psychological distress at midlife, and (2) compared alternative measurement specifications (reflective and formative) of SES.DesignProspective cohort study (the Aberdeen Children of the 1950s).SettingAberdeen, Scotland.Participants12 500 live-births (6282 boys) between 1950 and 1956, who were followed up in the years 2001-2003 at age 46-51 with a postal questionnaire achieving a response rate of 64% (7183).Outcome measuresPsychological distress at age 46-51 (questionnaire).ResultsChildhood intelligence and SES and education had indirect effects on psychological distress at midlife, mediated by adult SES. Adult SES was the only variable to have a significant direct effect on psychological distress at midlife; the effect was stronger in men than in women. Alternative measurement specifications of SES (reflective and formative) resulted in greatly different model parameters and fits.ConclusionsEven though formative operationalisations of SES are theoretically appropriate, SES is better specified as reflective than as a formative latent variable in the context of life-course modelling.
| S-EPMC3651977 | biostudies-literature
Project description:Research on healthy ageing lacks an agreed conceptual framework and has not adequately taken into account the growing evidence that social and biological factors from early life onwards affect later health. We conceptualise healthy ageing within a life-course framework, separating healthy biological ageing (in terms of optimal physical and cognitive functioning, delaying the onset of chronic diseases, and extending length of life for as long as possible) from changes in psychological and social wellbeing. We summarise the findings of a review of healthy ageing indicators, focusing on objective measures of physical capability, such as tests of grip strength, walking speed, chair rises and standing balance, which aim to capture physical functioning at the individual level, assessing the capacity to undertake the physical tasks of daily living. There is robust evidence that higher scores on these measures are associated with lower rates of mortality, and more limited evidence of lower risk of morbidity, and of age-related patterns of change. Drawing on a research collaboration of UK cohort studies, we summarise what is known about the influences on physical capability in terms of lifetime socioeconomic position, body size and lifestyle, and underlying physiology and genetics; the evidence to date supports a broad set of factors already identified as risk factors for chronic diseases. We identify a need for larger longitudinal studies to investigate age-related change and ethnic diversity in these objective measures, the dynamic relationships between them, and how they relate to other component measures of healthy ageing. Robust evidence across cohort studies, using standardised measures within a clear conceptual framework, will benefit policy and practice to promote healthy ageing.
| S-EPMC3981474 | biostudies-literature
Project description:BackgroundThe Bagé Cohort Study of Ageing is a population-based cohort study that has recently completed the first follow-up of a representative sample of older adults from Bagé, a city with more than 100,000 inhabitants located in the state of Rio Grande do Sul, Brazil. This is one of the first longitudinal studies to assess the impact of primary health care coverage on health conditions and inequalities. Our aim is to investigate the prevalence, incidence and trends of risk factors, health behaviours, social relationships, non-communicable diseases, geriatric diseases and disorders, hospitalisation, self-perceived health, and all-cause and specific-cause mortality. In addition, we aim to evaluate socioeconomic and health inequalities and the impact of primary health care on the outcomes under study.Methods/designThe study covers participants aged 60 or over, selected by probabilistic (representative) sampling of the urban area of the city of Bagé, which is covered by Primary Health Care Services. The baseline examination included 1593 older adults and was conducted from July 2008 to November 2008. After eight to nine years (2016/2017), the first follow-up was conducted from September 2016 to August 2017. All participants underwent an extensive core assessment programme including structured interviews, questionnaires, cognitive testing (baseline and follow-up), physical examinations and anthropometric measurements (follow-up).ResultsOf the original participants, 1395 (87.6%) were located for follow-up: 757 elderly individuals (47.5%) were re-interviewed, but losses in data transfer occurred for 22. The remaining 638 (40.1%) had died. In addition, we had 81 (5.1%) refusals and 117 (7.3%) losses. Among the 1373 older adults who were followed down, there was a higher proportion of female interviewees (p=0.042) and a higher proportion of male deaths (p=0.001) in 2016/2017. There were no differences in losses and refusals according to gender (p=0.102). There was a difference in average age between the interviewees (68.8 years; SD ±6.5) and non-interviewees (73.2 years; SD ±9.0) (p<0.001). Data are available at the Department of Social Medicine in Federal University of Pelotas, Rio Grande do Sul, Brazil, for any collaboration.
| S-EPMC8182998 | biostudies-literature