Hazard ratios (95% confidence intervals) of all coronary events by smoking status at the second examination for the total study population. Results from Cox’s proportional hazards regression analysis, with age as underlying time scale
| Smoking habits | Number of events | One variable in model* | All variables in model† |
|---|---|---|---|
| *Cox regression model stratified by sex and adjusted for cohort of origin. | |||
| †Multivariate analysis stratified by sex and adjusted for cohort, diastolic and systolic blood pressure (quintiles), total and high density level cholesterol (quintiles), body mass index (in four categories), education (in three categories), weekly alcohol consumption (in five categories), physical activity (sedentary, active), self reported diabetes (yes/no), inhalation habits (yes/no), and years as smokers (continuous). | |||
| Smoking category | |||
| Heavy smokers | 1208 | 1 | 1 |
| Quitters | 218 | 0.65 (0.56 to 0.75) | 0.68 (0.53 to 0.88) |
| Light smokers | 577 | 0.75 (0.68 to 0.82) | 0.71 (0.63 to 0.79) |
| Reducers (50%) | 149 | 0.99 (0.84 to 1.17) | 1.02 (0.83 to 1.24) |
| Reducers (33%) | 300 | 0.95 (0.84 to 1.08) | 0.99 (0.86 to 1.15) |