Table 2.
Univariate Analysis Using Cox Proportional Hazards Regression to Identify the Significant Predictors of Cardiac Events
| Variables | HR | 95% CI | P Value |
|---|---|---|---|
| Age | 0.973 | 0.950 to 0.995 | P=0.019 |
| Male | 1.310 | 0.823 to 2.085 | P=0.26 |
| Hypertension | 0.840 | 0.556 to 1.267 | P=0.41 |
| Dyslipidemia | 0.914 | 0.520 to 1.606 | P=0.76 |
| Diabetes | 1.859 | 1.253 to 42.759 | P=0.002 |
| Current smoking | 1.339 | 0.885 to 2.026 | P=0.17 |
| Body mass index | 1.030 | 0.965 to 1.099 | P=0.38 |
| CACS <100 (reference) | 1.00 | 1.00 | NA |
| CACS 100 to 400 | 1.987 | 1.172 to 3.369 | P=0.011 |
| CACS >400 | 2.210 | 1.316 to 3.709 | P=0.003 |
| Total cholesterol | 1.005 | 1.000 to 1.010 | P=0.07 |
| Triglyceride | 1.003 | 1.001 to 1.004 | P=0.001 |
| LDL cholesterol | 1.000 | 0.995 to 1.006 | P=0.95 |
| HDL cholesterol | 0.987 | 0.971 to 1.003 | P=0.12 |
| Culprit CT-HRP | 0.805 | 0.494 to 1.313 | P=0.39 |
| Nonculprit CT-HRP | 1.985 | 1.129 to 3.490 | P=0.0178 |
| Statin | 1.000 | 0.672 to 1.489 | P=0.99 |
CACS indicates coronary artery calcium score; CT-HRP, computed tomography–verified high-risk plaque; HDL, high-density lipoprotein; HR, hazard ratio; LDL, low-density lipoprotein; NA, not available.