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Table 2 Risk factors of superficial surgical site infection: a multiple logistic regression

From: Clinical prediction score for superficial surgical site infection after appendectomy in adults with complicated appendicitis

Variables Coefficient SE P value OR (95% CI) Score
Diabetes
 Yes 0.96 0.42 0.021 2.6 (1.2, 5.9) 1
 No 0
Operative time
 ≤ 75 min 1.22 0.33 < 0.001 3.4 (1.8, 6.5) 1.2
 > 75 min 0
Fecal contamination
 Yes 1.27 0.33 < 0.001 3.6 (1.9, 6.8) 1.3
 No 0
Incisional length
 ≤ 7 cm 1.03 0.33 0.002 2.8 (1.5, 5.4) 1
 > 7 cm 0
Total      0–4.5
  1. CI confidence interval, SE standard error, OR odds ratio