Social class | Smoking status | ||
---|---|---|---|
Passive/none | Current/past | ||
Non-manual | 392 (39.7%)4-150 | 390 (54.7%)4-150 | |
RR = 1.0† | RR = 1.4 (1.3 to 1.5)‡ | ||
Manual | 191 (48.4%)4-150 | 351 (65.5%)4-150 | |
RR = 1.2 (1.1 to 1.4)‡ | RR = 1.7 (1.5 to 1.8)‡ | ||
RR = 1.7 (1.3 to 2.1)§ | |||
RR = 1.6 (1.3 to 1.9)¶ |
↵4-150 Number (percentage) of people with a morbidity score above the median value of 4.1. †Reference category. ‡Observed relative risk compared with reference category (95% confidence intervals).§Expected crude relative risk on a multiplicative scale. ¶Expected crude relative risk on an additive scale.