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Demographics of study cohort
| Age (years) | 64.7 ± 15 |
| Male/female | 47%/53% |
| Tobacco use | 20% |
| Hypertension | 57% |
| Angina | 1% |
| Anemia | 11% |
| Malignancy | 4% |
| Functional status-dependent | 7.5% |
| Weight loss | 4.2% |
| Anastomotic leak | 2.2% |
| Fecal contamination | 2.2% |
| Prolonged ileus | 8.6% |
| Open wound | 1.2% |
| Wound class | |
| Clean contaminated | 81% |
| Contaminated | 10% |
| Dirty | 9% |
