Multivariate predictors of presenting with or developing ST elevation, based on 1205 complete datasets
| Odds ratio | 95% CI | p Value | |
| Age | 1.00 | 0.98 to 1.02 | 0.95 |
| Male sex | 1.01 | 0.66 to 1.54 | 0.98 |
| Smoking | 1.60 | 1.08 to 2.36 | 0.02 |
| Hypertension | 1.15 | 0.77 to 1.73 | 0.49 |
| Diabetes | 1.23 | 0.77 to 1.98 | 0.39 |
| Previous treatment with aspirin | 0.57 | 0.35 to 0.94 | 0.03 |
| Emergency treatment with aspirin | 0.63 | 0.28 to 1.40 | 0.26 |
| Pain duration < 120 min | 2.44 | 1.65 to 3.59 | < 0.001 |
Odds ratios represent odds of ST elevation.