Multivariate model showing predictive factors for 30-day mortality following colectomy for ischemic colitis
| Variable | OR | 95% CI | P value | |
| Lower | Upper | |||
| Age group (years) | ||||
| 18–40 | Reference | |||
| 41–64 | 1.68 | 0.98 | 2.90 | 0.061 |
| 65–79 | 3.36 | 1.96 | 5.74 | <0.001 |
| >80 | 5.13 | 2.97 | 8.86 | <0.001 |
| Comorbidities | ||||
| 0 | Reference | |||
| 1 | 1.76 | 1.23 | 2.51 | 0.002 |
| 2 | 2.65 | 1.87 | 3.76 | <0.001 |
| 3 | 3.10 | 2.15 | 4.47 | <0.001 |
| >4 | 4.45 | 3.06 | 6.47 | <0.001 |
| Functional status | ||||
| Independent | Reference | |||
| Partially dependent | 1.29 | 1.03 | 1.61 | 0.026 |
| Fully Dependent | 1.65 | 1.28 | 2.13 | <0.001 |
| Septic shock (preoperative) | 2.80 | 2.39 | 3.29 | <0.001 |
| Transfusions (preoperative) | 1.40 | 1.11 | 1.76 | 0.005 |
| Renal failure (preoperative) | 3.06 | 2.32 | 4.03 | <0.001 |
| Days to surgery | ||||
| 0 | Reference | |||
| 1 | 0.99 | 0.82 | 1.20 | 0.939 |
| 2 | 1.04 | 0.78 | 1.38 | 0.795 |
| >3 | 1.39 | 1.14 | 1.70 | 0.001 |