Table 2.

PA and mortality: Complete sample

Model	Covariates	PA level	PA-adjusted HR (95% CI)	P value
1	Age, sex	Low	1
		Medium	0.671 (0.478–0.940)	0.020
		High	0.498 (0.345–0.721)	0.001
2	Age, sex + demographic factors*	Low	1
		Medium	0.689 (0.490–0.967)	0.031
		High	0.514 (0.355–0.744)	0.001
3	Age, sex + demographic factors* + negative affect indicators†	Low	1
		Medium	0.728 (0.513–1.033)	0.076
		High	0.559 (0.379–0.824)	0.003
4	Age, sex + demographic factors* + negative affect indicators† + health indicators‡	Low	1
		Medium	0.794 (0.556–1.132)	0.202
		High	0.633 (0.427–0.938)	0.023
5	Age, sex + demographic factors* + negative affect indicators† + health indicators‡ + health behaviors§	Low	1
		Medium	0.800 (0.560–1.142)	0.22
		High	0.646 (0.436–0.958)	0.030

Reference group is low PA; 67 of 924 deaths in low, 70 of 1,530 in medium-PA and 50 of 1,399 in high-PA groups.

*Demographic factors: wealth, education, marital status, and employment status.

^†Negative affect indicators: negative affect, elevated CES-D score, and depressive illness in the past 2 y.

^‡Health indicators: self-rated health, cancer, CHD, stroke, diabetes, heart failure, and chronic lung disease.

^§Health behaviors: smoking, physical activity, and alcohol intake.