| Variable | OR (95% CI) | p value |
|---|---|---|
| Killip class 3 or 4 (yes v. no) | 5.07 (3.45–7.44) | < 0.0001 |
| eGFR ≤ 60 (yes v. no) | 3.14 (2.14–4.61) | < 0.0001 |
| Age ≥ 75 yr | 2.21 (1.49–3.27) | < 0.0001 |
| Transportation (EMS v. self) | 2.01 (1.27–3.19) | 0.003 |
| Reperfusion (yes v. no) | 0.58 (0.39–0.85) | 0.005 |
| History of diabetes (yes v. no) | 1.63 (1.09–2.43) | 0.02 |
| Optimal time to treatment (yes v. no) | 0.54 (0.34–0.87) | 0.01 |
| Symptom onset to ED arrival > 6 hr (yes v. no) | 1.47 (0.98–2.20) | 0.07 |
| PCI-capable centre presentation (yes v. no) | 0.89 (0.60–1.33) | 0.6 |
Note: CI = confidence interval, ED = emergency department, eGFR = estimated glomerular filtration rate, EMS = emergency medical services, PCI = percutaneous coronary intervention, OR = odds ratio. All variables included in the final model are presented. Eighty-two patients were not included in the model because some variables had missing values for these patients. The Hosmer-Lemeshow goodness-of-fit test showed good model fit (p = 0.572), C statistic = 0.85.