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Table 3 Multivariate analysis of risk factors for organ-space surgical site infection in colon and rectal surgery

From: Risk factors and outcomes of organ-space surgical site infections after elective colon and rectal surgery

  Colon   Rectum
Risk factor OR 95% CI p-value Risk factor OR 95% CI p-value
Male sex 1.57 1.14–2.15 0.004 Male sex 2.11 1.34–3.31 0.001
Laparoscopy 0.5 0.38–0.69 <0.001 Duration of operation ≥ p75tha 1.49 1.03–2.15 0.07
NNIS ≥ 1 1.17 0.83–1.64 0.36 NNIS ≥ 1 1.1 0.74–1.66 0.6
Oral antibiotic prophylaxis 0.7 0.51–0.97 0.03 Oral antibiotic prophylaxis 0.49 0.32–0.73 0.001
Ostomy 2.65 1.8–3.92 <0.001     
  1. Signifficant OR and 95% CI appear in bold text
  2. OR Odds ratio, 95%CI 95% confidence interval, NNIS National Nosocomial Infections Surveillance Risk Index.
  3. aGreater than 75th percentile for the duration of surgery (180 min, 3 h)