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

<p>Model 1 adjusted for age and gender.</p><p>Model 2 adjusted for covariates in model 1 and additionally for occupational social class, physical and mental strenuousness of work, smoking and drinking problems.</p><p>Model 3 adjusted for covariates in model 2 and additionally for body mass index, physical functioning mental health and limiting longstanding illness.</p><p>Model 4 adjusted for covariates in model 3 and additionally for the intensity of physical activity.