Risk of MI among non-smokers and ex-smokers in relation to (A) passive smoking in a home or public setting and (B) with duration of passive smoke exposure in the different settings
| Among non-smokers and ex-smokers only | ||||
| (A) Risk of passive smoke exposure | ||||
| Cases* (n=248) | Controls (n=360) | Age OR (95% CI) | aOR (95% CI) | |
| Exposure to passive smoking at home and in public | 43 (17.3) | 37 (10.3) | 1.9 (1.1 to 3.3) | 3.2 (1.7 to 6.3) |
| Exposure to passive smoking only at home | 12 (4.8) | 10 (2.8) | 1.7 (0.7 to 4.3) | 2.0 (0.7 to 5.6) |
| Exposure to passive smoking only in public settings | 122 (49.2) | 202 (56.1) | 1.0 (0.7 to 1.4) | 1.2 (0.7 to 2.0) |
| Not exposed to passive smoking | 71 (28.6) | 111 (30.8) | 1.0 | 1.0 |