| Killip class before thrombolysis (referent: class II–IV) | | | | |
| Class I | 1.78 (1.02 to 3.12) | 0.04 | – | – |
| Undetermined Killip class (n = 24) | 2.07 (0.77 to 5.53) | 0.15 | – | – |
| Smoking status (referent: non-smokers) | | | | |
| Current or previous smokers | 1.70 (1.24 to 2.35) | <0.01 | 1.60 (1.15 to 2.22) | <0.01 |
| Undetermined smoking status (n = 53) | 2.47 (1.32 to 4.62) | <0.01 | 2.67 (1.40 to 5.08) | <0.01 |
| Number of leads with ST elevation before thrombolysis (referent: >5 leads) | | | | |
| ⩽5 leads | 1.85 (1.32 to 2.59) | <0.001 | 1.59 (1.12 to 2.25) | <0.01 |
| Killip class before coronary angiography (referent: class II–IV) | | | | |
| Class I | – | – | 1.96 (1.05 to 3.67) | 0.03 |
| Chest pain before coronary angiography (referent: no pain relief) | | | | |
| Chest pain relief (complete pain relief) | – | – | 1.62 (1.17 to 2.25) | <0.01 |
| Undetermined pain status (n = 133) | – | – | 1.04 (0.68 to 1.58) | 0.87 |
| | | | |
| ST resolution before coronary angiography (referent: <70%) | | | | |
| ⩾70% | – | – | 1.76 (1.29 to 2.38) | <0.001 |
| | | | |
| C statistic | 0.60 (0.57 to 0.64) | | 0.66 (0.62 to 0.70) | |