Table 4. Association among variables and CIAKI in STEMI patients undergoing primary PCI by multivariate regression analysis.
| Variables | Adjusted OR | 95% CI | p value |
| Model 1 | |||
| Age (years) | 1.055 | 1.004-1.109 | 0.033* |
| Creatinine (mg/dl) | 1.427 | 0.778-2.620 | 0.251 |
| Hemoglobin (g/dl) | 0.908 | 0.689-1.197 | 0.493 |
| Multi-vessel disease | 6.373 | 0.698-58.17 | 0.101 |
| SI > 10 | 4.179 | 1.197-14.59 | 0.025* |
| BID > 9 times | 1.846 | 0.543-6.271 | 0.326 |
| Any dissection | 1.161 | 0.322-4.185 | 0.82 |
| IABP use | 1.748 | 0.497-6.145 | 0.384 |
| Beta-blocker | 1.539 | 0.407-5.812 | 0.525 |
| ACEI or ARB | 13.27 | 2.582-68.21 | 0.002* |
| Model 2 | |||
| SI > 10 | 4.434 | 1.650-11.91 | 0.003* |
| MRS | 1.243 | 1.113-1.387 | < 0.001* |
| Model 3 | |||
| SI > 10 | 3.498 | 1.086-11.27 | 0.036* |
| MRS | 1.172 | 1.026-1.339 | 0.020* |
| Multi-vessel disease | 5.851 | 0.672-50.94 | 0.11 |
| BID > 9 times | 1.866 | 0.600-5.804 | 0.281 |
| Any dissection | 1.123 | 0.332-3.800 | 0.852 |
| Beta-blocker | 1.781 | 0.493-6.430 | 0.379 |
| ACEI or ARB | 9.864 | 2.292-42.46 | < 0.001* |
* Statistical significance among variables and CIAKI.
ACEI, angiotensin converting enzyme inhibitor; ARB, angiotensin II receptor blocker; BID, balloon inflations and deflations; CI, confidence interval; CIAKI, contrast-induced acute kidney injury; IABP, intra-aortic balloon pump; MRS, Mehran risk score; OR, odds ratio; PCI, percutaneous coronary intervention; SI, SYNTAX score of infarct-related artery; STEMI, ST-segment elevation myocardial infarction.