Variables | univariate | multivariate | ||
---|---|---|---|---|
p value | OR (95% CI) | p value | OR (95% CI) | |
Hypertension | ||||
 Yes | 0.007 | 1.975(1.207–3.232) | 0.024 | 1.903(1.088–3.327) |
 Noa |  |  |  |  |
Tuberculosis | ||||
 Yes | 0.017 | 8.972(1.475–54.559) | 0.083 | 7.880(0.762–81.492) |
 Noa |  |  |  |  |
Albumin | ||||
  ≥ 3.5 g/dla |  |  |  |  |
  < 3.5 g/dl | < 0.001 | 2.960(1.821–4.810) | 0.069 | 1.715(0.958–3.068) |
Blood glucose | ||||
 80–150 mg/dla |  |  |  |  |
  > 150 mg/dl | 0.008 | 2.417(1.256–4.651) | 0.879 | 1.065(0.475–2.388) |
  < 80 mg/dl | 0.637 | 1.166(0.617–2.200) |  |  |
Type of surgery | ||||
 Rectal surgerya |  |  |  |  |
 Colon surgery | 0.002 | 2.419(1.370–4.269) | 0.154 | 0.631(0.335–1.188) |
Urgency of surgery | ||||
 Electivea |  |  |  |  |
 Emergency | < 0.001 | 5.927(3.245–10.827) | 0.913 | 1.056(0.397–2.815) |
Timing of hair removal | ||||
 Nonea |  |  |  |  |
 Night before surgery | 0.009 | 0.477(0.272–0.834) | 0.342 | 0.711(0.352–1.442) |
 Day of surgery | 0.311 | 0.698(0.348–1.399) |  |  |
Bowel preparation | ||||
 Nonea |  |  |  |  |
 MBP only | < 0.001 | 0.376(0.223–0.634) | 0.185 | 0.650(0.344–1.229) |
 OABP only | 0.554 | 1.324(0.523–3.355) |  |  |
 MBP + OABP | 0.083 | 0.427(0.163–1.119) |  |  |
Approach | ||||
 Opena |  |  |  |  |
 Laparoscopic or robotic | < 0.001 | 0.259(0.157–0.429) | < 0.001 | 0.363(0.200–0.659) |
Incisional protection | ||||
 Nonea |  |  |  |  |
 Wound edge protector | 0.545 | 0.833(0.460–1.507) |  |  |
 Gauze | 0.368 | 0.676(0.288–1.585) |  |  |
 Adhesive incise drapes | 0.031 | 0.472(0.239–0.932) | 0.018 | 0.400(0.187–0.855) |
Skin closure materials | ||||
 Silk suturesa |  |  |  |  |
 Absorbable sutures | 0.060 | 0.524(0.268–1.027) |  |  |
 Skin staples | 0.953 | 0.978(0.466–2.051) |  |  |
 other | 0.053 | 2.496(0.988–6.307) |  |  |
Incisional wound irrigation | ||||
 Nonea |  |  |  |  |
 Incisional wound irrigation | 0.111 | 0.465(0.181–1.193) |  |  |
 Hydrogen peroxide solution | 0.317 | 0.500(0.129–1.942) |  |  |
 Saline | 0.134 | 0.562(0.264–1.195) |  |  |
 Other | 0.257 | 1.920(0.621–5.936) |  |  |
Colostomy/ileostomy | ||||
 Noa |  |  |  |  |
 Yes | < 0.001 | 3.805(2.233–6.483) | 0.081 | 1.820(0.929–3.564) |
NNIS risk index | ||||
 0 or 1a |  |  |  |  |
 2 or 3 | < 0.001 | 6.481(3.655–11.493) | < 0.001 | 3.840(1.926–7.658) |