Table 4. Multivariable logistic regression analysis of clinical outcomes.
| Time of symptom onset | 1-year mortality | 30-day mortality | Reinfarction | Left ventricular systolic dysfunction | Killip Class (I vs. II—IV) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | |
| Midnight–6:00 A.M. | 1 (reference group) | 0.7 | 1 (reference group) | 0.47 | 1 (reference group) | 0.85 | 1 (reference group) | 0.07 | 1 (reference group) | 0.001 |
| 6:00 A.M.–Noon | 0.73 (0.35–1.49) | 0.93 (0.53–1.64) | 1.16 (0.50–2.70) | 0.83 (0.67–1.02) | 0.69 (0.57–0.82) | |||||
| Noon–6:00 P.M. | 1.07 (0.47–2.44) | 1.47 (0.79–2.75) | 0.81 (0.30–2.21) | 1.05 (0.83–1.33) | 0.73 (0.61–0.88) | |||||
| 6:00 P.M.–Midnight | 0.77 (0.35–1.71) | 1.20 (0.64–2.23) | 1.24 (0.50–3.05) | 1.02 (0.80–1.29) | 0.88 (0.74–1.05) | |||||
A multivariable logistic regression model adjusting for diabetes prevalence, infarct location (anterior vs. non-anterior) and performance of percutaneous coronary intervention (PCI) was used to determine if time of symptom onset was an independent predictor of secondary outcomes.