Table 2.
Perioperative/operative variables.
| Variable | Total number | Incisional SSI | |
|---|---|---|---|
| % | P value | ||
| Mechanical bowel preparation | 0.549 | ||
| Presence | 172 | 14.0 | |
| Absence | 52 | 17.3 | |
| Timing of prophylactic antibiotic use | 0.773 | ||
| 15–29 minutes before incision | 107 | 14.0 | |
| 30–50 minutes before incision | 117 | 15.4 | |
| Type of procedure | 0.688 | ||
| Right-sided colectomy | 38 | 15.8 | |
| Left-sided colectomy | 45 | 20.0 | |
| Transverse colectomy | 13 | 23.1 | |
| Sigmoid anterior resection | 50 | 12.0 | |
| Rectal anterior resection | 54 | 13.0 | |
| Abdominoperineal resection | 14 | 14.3 | |
| Hartmann's procedure | 10 | 0.0 | |
| Type of anastomosis | 0.353 | ||
| Functional end-to-end | 93 | 19.4 | |
| Side-to-end | 66 | 10.6 | |
| End-to-end | 41 | 14.6 | |
| No anastomosis | 24 | 8.3 | |
| Additional procedure | |||
| Ostomy formation | 25 | 8.0 | 0.314 |
| Multiple organ resection | 34 | 14.7 | 0.996 |
| Length of operaion (min) | 0.202 | ||
| <90 | 121 | 11.6 | |
| 90–180 | 91 | 19.8 | |
| ≥180 | 12 | 8.3 | |
| Wound classification | 0.639 | ||
| II | 183 | 14.2 | |
| III | 41 | 17.1 | |
| Depth of incisional site (cm) | 0.269 | ||
| <3 | 131 | 13.0 | |
| ≥3 | 69 | 18.8 | |
| Length of incisional site (cm) | 0.098 | ||
| <20 | 120 | 11.7 | |
| ≥20 | 79 | 20.3 | |
| Intraoperative hypotension (mmHg) | 0.010 | ||
| SBP < 80 | 138 | 19.6 | |
| SBP ≥ 80 | 86 | 7.0 | |
| Estimated blood loss (mL) | 0.533 | ||
| <100 | 116 | 13.8 | |
| 100–400 | 78 | 18.0 | |
| ≥400 | 30 | 10.0 | |
| Perioperative blood transfusion | 0.319 | ||
| Presence | 41 | 9.8 | |
| Absence | 183 | 15.9 | |
| Postoperative glucose (g/dL) | 0.384 | ||
| <200 | 188 | 13.8 | |
| ≥200 | 36 | 19.4 | |
SBP: systolic blood pressure.