Table 3. Cox regression of 2-year all-cause death before PSM.
| Characteristics | Univariate | Multivariate | ||
|---|---|---|---|---|
| HR (95% CI) | p value | HR (95% CI) | p value | |
| Age | 1.079 (1.057–1.101) | <0.001 | 1.069 (1.043–1.096) | <0.001 |
| Previous CABG | 2.168 (0.951–4.943) | 0.066 | 0.970 (0.388–2.420) | 0.947 |
| Previous PCI | 1.686 (1.119–2.540) | 0.012 | 1.440 (0.924–2.243) | 0.107 |
| OMI | 1.859 (1.226–2.819) | 0.004 | 1.122 (0.691–1.822) | 0.642 |
| SCr before PCI | 1.024 (1.015–1.033) | <0.001 | 1.011 (1.002–1.022) | 0.024 |
| LVEF | 0.939 (0.920–0.958) | <0.001 | 0.954 (0.932–0.977) | <0.001 |
| IABP support | 1.573 (1.334–1.855) | <0.001 | 1.315 (1.107–1.561) | 0.002 |
| IOCM vs. LOCM | 2.377 (1.583–3.570) | <0.001 | 0.849 (0.510–1.412) | 0.528 |
CABG = coronary artery bypass grafting; CI = confidence interval; HR = hazard ratio; IABP = intra-aortic balloon pump; IOCM = iso-osmolality contrast media; LOCM = low-osmolar contrast media; LVEF = left ventricular ejection fraction; OMI = old myocardial infarction; PCI = percutaneous coronary intervention; PSM = propensity score matching; SCr = serum creatinine.