Objective To examine the associations between multiple health behaviours and health outcomes among older Chinese adults. Methods Data from the World Health Organization's Study on global AGEing and adult health Wave 1 (2007-2010), collected among the older Chinese population, were included in this study. Smoking, diet, and physical activity were analysed by linear regression for any associations with depressive symptoms, quality of life (QoL), cognitive function, and physical function. Results A total of 13 367 participants aged >49 years were included in the analyses. After controlling for key socioeconomic factors, healthy diet was significantly associated with higher QoL (beta = 0.099) and better cognitive function (beta = 0.023). Physical activity was significantly associated with fewer depressive symptoms (beta = -0.020), higher QoL (beta = 0.086), better cognitive function (beta = 0.072), and better physical function (beta = -0.155 higher scores = poorer physical function). No relationship was found between smoking and any health-related outcome included in this study. Conclusion This study demonstrates the importance of healthy diet and physical activity for health outcomes in the older Chinese population.
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