Combined lifestyle habits, subjective well-being, and all-cause mortality among older adults in China | BMC Geriatrics
Study population The Chinese Longitudinal Healthy Longevity Survey (CLHLS) is a prospective, nationally representative cohort study of older adults in mainland China, as described elsewhere in detail [20]. In brief, beginning in 1998, subsequent examinations of CLHLS were conducted every 2 to 3 years. To ensure representativeness, a multilevel cluster sampling method was used. In…