How do lifestyle choices affect the link between living alone and psychological distress in older age? Results from the AgeHeaPsyWel-HeaSeeB study

BACKGROUND: Social isolation is widespread and strongly associated with worsening health-related outcomes across the life-course. Despite this broad base of knowledge, there is a paucity of research on the interactive effect of lifestyle choices and living arrangements on later life psychological state particularly in low- and middle-income settings. The aim of this study is to examine the influence of living alone on psychological distress in older people and to explore the protective roles of social participation and physical activity participation. METHODS: We used cross-sectional data from the 2016—17 Aging, Health, Psychological Well-being and Health-seeking Behavior Study (AgeHeaPsyWel-HeaSeeB) involving a representative sample of 1200 adults aged 50+ years in Ghana. The study focused on a latent measure of Kessler Psychological Distress Scale (K10) and on the General Practice Physical Activity Questionnaire (GPPAQ). Ordinary Least Squares (OLS) regression models evaluated the interactive effects of living arrangements and lifestyle choices on the K10 score. RESULTS: Living alone was independent predictor of psychological distress in the overall sample, among females, urban dwellers and all age groups. However, lifestyle choices of physical activity and social participation significantly moderated these associations. Moreover, in the stratified analysis, physical activity moderated the association for males, rural-dwellers and those 65+ years whilst social participation moderated the association for females, urban-dwellers and those 50–64 years. CONCLUSIONS: Lifestyle choices i.e. social participation and physical activity, and demographic factors i.e. age, gender, and residential status strongly attenuate the positive association of living alone with the risk of psychological distress in older age. These findings may inform intervention initiatives targeted at improving mental health of chronically detached and isolated older people.