Odds ratio3-150 | 95% CI | |
Smoking status † | ||
Current | 2.9 | 2.3, 3.6 |
Past | 1.5 | 1.2, 1.8 |
Passive | 1.4 | 1.0, 1.8 |
Non (reference) | 1 | — |
Social class † | ||
I (reference) | 1 | — |
II | 0.9 | 0.6, 1.3 |
IIIN | 1.1 | 0.8, 1.6 |
IIIM | 1.3 | 0.9, 1.9 |
IV | 1.4 | 0.9, 2.1 |
V | 2.4 | 1.3, 4.4 |
↵3-150 Adjusted for age, sex, general practice, and either social class or smoking status. †Test for trend (p<0.001, 1 degree of freedom).