Journal
RESEARCH ON AGING
Volume 45, Issue 9-10, Pages 666-677Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/01640275231157784
Keywords
dyadic relationships; health concordance; health behaviors; dementia; older couples
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This study used data from the China Health and Retirement Longitudinal Study to examine the interdependence of couples' health behaviors and cognitive outcomes. The results showed that couples' sedentary lifestyle was associated with an increased risk of memory-related disorders. Promoting physical activity in couples may help reduce cognitive aging.
Objectives: Studies on the interdependence of couples' health behaviors and subsequent cognitive outcomes remain limited. Methods: Longitudinal data from the China Health and Retirement Longitudinal Study (2011-2018) were used (N = 1869 heterosexual couples). Latent class analysis identified the dyadic pattern of health behaviors in 2011 (i.e., alcohol consumption, smoking, and physical inactivity). Stratified Cox models examined the association of latent classes with risk of developing memory-related disorders in 2013-2018. Results: Three classes were identified: class 1 (21.25%, only husband smoke, and both active), class 2 (47.55%, both inactive, neither drink nor smoke), and class 3 (31.20%, both drink and smoke, and both active). Couples' sedentary lifestyle was associated with an increased risk of memory-related disorders among both husbands and wives. Conclusion: Couples were moderately concordant in their physical activity but weakly in smoking and drinking. Couple-based interventions, especially promoting physical activity, may reduce cognitive aging among middle-aged and older Chinese couples.
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