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Table 2 Full model of total risk scores for hospitalization diagnostic (ICD-10) codes, physician diagnostic (ICD-9) codes and physician procedure claims, adjusted for the study covariates

From: Predicting postoperative surgical site infection with administrative data: a random forests algorithm

Effect Adjusted Odds Ratio 95% Confidence interval
Hospitalization diagnostic score 2.12 1.91–2.20
Physician diagnostic score 1.88 1.75–2.02
Physician procedure score 1.45 1.31–1.56
Age < 65 years 1.74 1.40–2.16
Log-operation duration, min 1.52 1.30–1 .72
Surgical specialty
 General surgery 1.60 1.20–2.15
 Gynecology 1.19 0.80–1.76
 Orthopedics 0.77 0.53–1.11
 Plastics 2.37 1.59–3.51
 Vascular 1.75 1.12–2.68
 Other Reference Reference
Female 1.18 0.96–1 .47
Concurrent surgical procedures
 1 1.05 0.67–1.63
 2+ 1.09 0.67–1.75
 0 Reference Reference
ASA class
 I 0.87 0.75–1.33
 II 1.21 0.80–1.80
 III 1.10 0.66–1.76
 IV 0.32 0.04–1.03
 V Reference Reference
Emergent case 0.99 0.79–1.20