Smoking status* | Cases n = 309 | Controls n = 618 | Age and hospital adjusted RR (95% CI) | Multivariate adjusted RR (95% CI) | Number of smoking associated MI cases† (%) |
---|---|---|---|---|---|
*Never smokers (reference group) does not include cigarette smokers, bidi smokers, or users of other forms of tobacco (n = 7 cases and n = 19 controls used other forms of tobacco only). Ever smokers include former and current cigarette or bidi smokers. Current smokers include current smokers of cigarettes or bidis. | |||||
†Smoking associated number of MI cases calculated as (1−1/risk ratio) × number of cases who smoked in that group. | |||||
Never | 82 | 359 | 1.0 | 1.0 | – |
Ever | 220 | 240 | 4.0 (3.0 to 5.4) | 3.9 (2.8 to 5.6) | 163 (74%) |
Former | 47 | 77 | 2.7 (1.7 to 4.1) | 2.6 (1.6 to 4.3) | 29 (62%) |
Current | 173 | 163 | 4.6 (3.4 to 6.4) | 4.7 (3.2 to 6.9) | 136 (79%) |