air pollution, leisure activities, cognitive functions, bi-directional relationship, ageing
PM2·5 constituents, Exposure mixture, Black carbon, Organic matter, Cognitive impairment, Cognitive aging, Chinese Longitudinal Healthy Longevity Study (CLHLS)
Cooking fuel, Mortality, Socioeconomic status, China Health and Nutrition Survey
Solid fuel use, dementia risk, Rotterdam Study Basic Dementia Risk Model, middle-aged and older adults