Table 4. Hazard ratios (95% CI) for all-cause mortality according to the volume of leisure-time physical activity.

HR (95%CI) according to the volume of physical activity
	Low	Middle	High
Model 1	1.00	0.61 (0.44–0.86)	0.67 (0.48–0.93)
Model 2	1.00	0.65 (0.47–0.92)	0.73 (0.53–1.01)
Model 3	1.00	0.71 (0.50–1.00)	0.81 (0.58–1.14)
Model 4	1.00	0.78 (0.55–1.12)	0.99 (0.67–1.47)

Model 1 adjusted for age and gender.

Model 2 adjusted for covariates in model 1 and additionally for occupational social class, physical and mental strenuousness of work, smoking and drinking problems.

Model 3 adjusted for covariates in model 2 and additionally for body mass index, physical functioning mental health and limiting longstanding illness.

Model 4 adjusted for covariates in model 3 and additionally for the intensity of physical activity.