Association between daily sedentary time and frailty among people aged 50 years and over

Objective To investigate the association between daily sedentary time and frailty among people aged 50 years and over. Methods Cross-sectional data was collected from the first wave of World Health Organization Study on global AGEing and adult health in China. A two-level (individual level and community level) logistic model was performed to identify the association between daily sedentary time and frailty. The dose-response relationship between them was analyzed by restrictive cubic spline curve. Results A total of 13 175 individuals aged 50 years and over were included for analysis. A positive association between daily sedentary time and frailty was noticed, both in urban (OR=1.22, 95%CI: 1.17-1.27) or rural areas (OR=1.11, 95%CI: 1.05-1.18) under study. The dose-response curve showed that daily sedentary time and frailty might present an approximate linear relationship. Conclusion Results from this study showed significant association exsited between daily sedentary time and frailty, approximately with a linear dose-response relationship. Key words: Sedentary time; Frailty