Table 4. Cox regression of 2-year all-cause death after PSM.
| Characteristics | Univariate | Multivariate | ||
|---|---|---|---|---|
| HR (95% CI) | p value | HR (95% CI) | p value | |
| Age | 1.045 (1.008–1.083) | 0.016 | 1.037 (1.001–1.074) | 0.042 |
| SCr before | 1.025 (1.012–1.039) | <0.001 | 1.016 (1.002–1.030) | 0.024 |
| LVEF | 0.954 (0.923–0.985) | 0.005 | 0.978 (0.941–1.016) | 0.247 |
| IABP support | 1.853 (1.555–2.708) | <0.001 | 1.662 (1.363–2.026) | <0.001 |
| IOCM vs. LOCM | 0.890 (0.463–1.713) | 0.728 | 1.037 (0.534–2.014) | 0.915 |
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; PSM = propensity score matching; SCr = serum creatinine.