Table 2. Hazard ratios (95% CIs) associated with all-cause mortality risk for various types of physical activity among Chinese older adults from 1998 to 2018.

Physical activity	Deaths/No. of participants	HR (95% CI) for all-cause mortality
		Model 1	Model 2	Model 3
Note: Model 1: adjusted sex; Model 2: further adjusted ethnicity, residence, marital status, occupation, income level, educational level, living arrangement, smoking status, drinking status, dietary diversity score type; Model 3: further adjusted body mass index, self-reported health status, hypertension, diabetes mellitus, respiratory diseases, CVD, ADL disability, Mini-Mental State Examination score, cancer, and mutually adjusted for regular exercise, leisure activities or physical work as appropriate. Attained age was used as time scale. Abbreviation: HR=hazard ratio; CI=confidence interval; CVD=cardiovascular diseases; ADL=activities of daily living. * P<0.01. † P<0.001.
Regular exercise
No	19,200/24,794	1.00 (reference)	1.00 (reference)	1.00 (reference)
Yes	6,038/9,244	0.802 (0.778–0.826)†	0.809 (0.785–0.834)†	0.900 (0.870–0.931)†
Leisure activities
No	8,632/10,460	1.00 (reference)	1.00 (reference)	1.00 (reference)
Yes	16,606/23,578	0.970 (0.944–0.996)*	0.762 (0.733–0.793)†	0.903 (0.864–0.943)†
Physical work
No	4,586/6,443	1.00 (reference)	1.00 (reference)	1.00 (reference)
Yes	20,652/27,595	0.979 (0.948–1.011)	0.943 (0.909–0.977)*	0.979 (0.941–1.018)