| Variables | Incisional SSI (N=52) | P value | Organ/space SSI (N=42) | P value |
|---|---|---|---|---|
| Gender | 0.427 | 0.353 | ||
| Male (n=204) | 14.7% | 14.2% | ||
| Female | 18.0% | 10.7% | ||
| Age (y) | 0.152 | 0.467 | ||
| ≥60 (n=146) | 19.2% | 14.4% | ||
| <60 | 13.3% | 11.7% | ||
| Diabetes mellitus | 0.207 | 0.189 | ||
| Yes (n=29) | 24.1% | 20.7% | ||
| No | 15.2% | 12.1% | ||
| COPD | 0.007 | 0.314 | ||
| Yes (n=26) | 34.6% | 19.2% | ||
| No | 14.3% | 12.3% | ||
| Tumor location | 0.062 | 0.915 | ||
| Colon (n=181) | 19.3% | 12.7% | ||
| Rectum | 11.7% | 13.1% | ||
| Tumor size | 0.684 | 0.409 | ||
| ≥5 cm (n=121) | 14.9% | 14.9% | ||
| <5 cm | 16.6% | 11.7% | ||
| Lymph node involvement | 0.401 | 0.790 | ||
| Yes (n=149) | 14.1% | 13.4% | ||
| No | 17.5% | 12.4% | ||
| Depth of tumor | 0.084 | 0.244 | ||
| T1, T2(n=60) | 14.3% | 13.9% | ||
| T3, T4 | 23.3% | 8.3% | ||
| ASA score | 0.466 | 0.382 | ||
| I–II (n=221) | 14.9% | 11.8% | ||
| III–IV | 18.1% | 15.2% | ||
| Blood transfusion | 0.134 | 0.205 | ||
| Yes (n=97) | 20.6% | 16.5% | ||
| No | 14.0% | 11.4% | ||
| Operative approach | 0.031 | 0.120 | ||
| Open (n=121) | 21.7% | 16.7% | ||
| Laparoscopic | 12.6% | 10.7% | ||
| Abdominal surgical history | 0.026 | 0.208 | ||
| Yes (n=69) | 24.6% | 17.4% | ||
| No | 13.6% | 11.7% | ||
| Vascular invasion | 0.492 | 0.362 | ||
| Yes (n=68) | 13.2% | 16.2% | ||
| No | 16.7% | 12.0% | ||
| Perineural invasion | 0.083 | 0.854 | ||
| Yes (n=74) | 9.5% | 13.5% | ||
| No | 17.9% | 12.7% | ||
| BMI | 0.668 | 0.693 | ||
| ≥25 kg/m2 (n=70) | 14.3% | 14.3% | ||
| <25 kg/m2 | 16.4% | 12.5% | ||
| Differentiation | 0.181 | 0.129 | ||
| Yes (n=293) | 9.2% | 14.7% | ||
| No | 16.2% | 24.3% | ||
| Preoperative obstruction | 0.574 | 0.673 | ||
| Yes (n=92) | 14.1% | 14.1% | ||
| No | 16.7% | 12.4% |
SSI – surgical site infection; ASA score – American Society of Anesthesiologists score; BMI – body mass index; COPD – chronic obstructive pulmonary disease.