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Cumulative survival according to the sedentary time. Survival rate in patients with COPD after adjusted by sex, age, body mass index, educational level, lung function, functional exercise capacity, and moderate to vigorous-intensity physical activity. Gray line indicates the patients with <8.5 h/day of time spent in sedentary activities. Black line indicates the patients with ≥8.5 h/day of time spent in sedentary activities. Adopted from [101].
