Table 5.
Univariate and multivariate cox regression analysis for determining the risk factors associated with long-term cardiac death.
| Variables | Univariate analysis | Multivariate analysis for SS | Multivariate analysis for RSS | |||
|---|---|---|---|---|---|---|
| HR (95% CI) | p | HR (95% CI) | p | HR (95% CI) | p | |
| Age | 1.181 (1.13–1.234) | <0.001 | 1.156 (1.093–1.223) | <0.001 | 1.171 (1.104–1.243) | <0.001 |
| Male gender | 0.41 (0.19–0.885) | 0.023 | 1.895 (0.753–4.766) | 0.175 | 2.162 (0.858–5.448) | 0.102 |
| HT | 0.697 (0.325–1.493) | 0.353 | — | — | — | — |
| DM | 1.69 (0.784–3.643) | 0.180 | — | — | — | — |
| HL | 0.583 (0.273–1.244) | 0.163 | — | — | — | — |
| CAD | 0.998 (0.403–2.474) | 0.997 | — | — | — | — |
| Smoking | 0.254 (0.096–0.674) | 0.006 | 0.891 (0.255–3.117) | 0.857 | 0.867 (0.259–2.905) | 0.817 |
| Hba1c | 1.091 (0.875–1.362) | 0.439 | — | — | — | — |
| CreCl | 0.975 (0.96–0.989) | 0.001 | 1.008 (0.982–1.035) | 0.550 | 1.013 (0.987–1.04) | 0.335 |
| Hb | 0.795 (0.671–0.941) | 0.008 | 0.955 (0.768–1.189) | 0.682 | 0.972 (0.815–1.159) | 0.751 |
| LVEF | 0.973 (0.94–1.008) | 0.125 | — | — | — | — |
| WBC | 0.956 (0.855–1.068) | 0.425 | — | — | — | — |
| CRP | 0.956 (0.855–1.068) | 0.868 | — | — | — | — |
| PLT | 1.002 (0.997–1.006) | 0.399 | — | — | — | — |
| Stent diameter | 0.747 (0.302–1.849) | 0.528 | — | — | — | — |
| Stent length | 0.981 (0.946–1.017) | 0.294 | — | — | — | — |
| Number of stents | 0.529 (0.203–1.378) | 0.192 | — | — | — | — |
| Type of stent | — | — | — | — | ||
| BMS | Ref | — | — | — | — | — |
| DES | 0.753 (0.338–1.679) | 0.488 | — | — | — | — |
| Anterior infarction | 0.775 (0.354–1.694) | 0.522 | — | — | — | — |
| Inferior infarction | 1.203 (0.562–2.575) | 0.634 | — | — | — | — |
| Other infarction | 1.257 (0.297–5.312) | 0.756 | — | — | — | — |
| SS | 1.118 (1.077–1.161) | <0.001 | 1.074 (1.032–1.118) | <0.001 | — | — |
| RSS | 1.115 (1.076–1.157) | <0.001 | — | — | 1.083 (1.038–1.13) | <0.001 |
| Grace Score | 1.046 (1.032–1.061) | <0.001 | 1.019 (0.997–1.041) | 0.085 | 1.017 (0.996–1.039) | 0.113 |
BMS: bare metal stent, CAD: coronary artery disease, CreCl: creatinine clearance, CRP: C-reactive protein, DES: drug eluting stent, DM: diabetes mellitus, Hb: hemoglobin, HbA1C: hemoglobin A1C, HL: hyperlipidemia, HT: hypertension, LVEF: left ventricular ejection fraction, PLT: platelet, RSS: residual SYNTAX score, SS: SYNTAX score, and WBC: white blood cell.