Influence of smoking, previous aspirin treatment, both, and neither on ST elevation (n = 1287) and Q wave development (n = 1130) in acute myocardial infarction
| Smoking | Previous aspirin | Both | Neither | p Value | |
| ST elevation | 565 (91.1) | 68 (77.3) | 51 (89.5) | 454 (87.0) | 0.001 |
| Q wave development | 442 (78.8) | 49 (73.1) | 33 (64.7) | 375 (83.1) | 0.006 |
Data, number (percentages), are for patients in whom datasets for each of the four variables were complete.