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Multivariable logistic regression for risk of surgical site infection (SSI) by surgical wound classification
| Wound classification | Odds ratio | 95% Confidence interval |
P-value | Expected SSI rate | 95% Confidence interval |
||
|---|---|---|---|---|---|---|---|
| Lower | Upper | Lower | Upper | ||||
| Clean | Ref | Ref | Ref | Ref | 18.9% | 16.2% | 21.9% |
| Clean/Contaminated | 1.00 | 0.86 | 1.17 | 0.999 | 19.0% | 17.3% | 20.4% |
| Contaminated | 1.39 | 1.14 | 1.69 | 0.001 | 24.6% | 21.8% | 27.4% |
| Dirty/Infected | 1.42 | 1.06 | 1.91 | 0.019 | 25.2% | 20.2% | 30.3% |
