| Summary: | In the decades to come, Sweden will be facing an unprecedented increase in the proportion of inhabitants aged 80 years or older. This age group is characterised by large heterogeneity; however ageing also poses challenges for health and well-being. These challenges apply not only to the individual, but also to the health care systems. Care of this older age group employs much of the nursing resources, affecting society as a whole. Healthy ageing can and should, therefore, be promoted in the decades prior to reaching old age, and once having reached old age, well-being should be a continued focus of health care and society. In this way older adults can continue perceiving good health and well-being. The overall aim of this thesis was to explore and describe areas of importance to healthy ageing and well-being in old age. Predictors of healthy ageing were prospectively studied as part of the northern Sweden Silver-MONICA project, from baseline in 1999 (n=1595) to follow-up 20 years later (n=541). For the healthy ageing outcome, a composite outcome comprised of measures of cognition (MMSE), 2.4 metre walking speed, personal independence in everyday life (Katz P-ADL) and depression (GDS15) was constructed. To study perceptions of general well-being in old age, a subsample (n=52) age > 80 was analysed as a cross-section using mixed method with open-ended interviews and the PGCMS well-being measure. A similar approach was used (n=50) to investigate specific aspects of well-being in relation to home. To study the relationship between well-being and objectively measure everyday physical activity, an accelerometer was worn 24 hours per day for at least 5 consecutive days (n=77) and analysed for associations with the PGCMS and its subscales. The five top ranking predictors determined by the healthy ageing index, comprising the total baseline cohort including those who passed away before possible follow-up were smoking status, NT-proBNP, waist circumference, leisure time physical activity level and HbA1c. For those who ...
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