Table. AUC Scores for All Outcome Measures.
| Outcome measure | Best machine learning model | DCRA case-mix regression model | ASA score | POSPOM | CCI |
|---|---|---|---|---|---|
| Mortality | 0.82 (0.79-0.85) | 0.81 (0.78-0.84) | 0.74 (0.71-0.77) | 0.73 (0.70-0.77) | 0.66 (0.63-0.70) |
| P valuea | NA | .01 | 1.1 × 10−10 | 1.4 × 10−10 | 6.0 × 10−17 |
| Complicated course | 0.68 (0.67-0.69) | NA | NA | NA | NA |
| Prolonged length of stay | 0.71 (0.69-0.73) | NA | NA | NA | NA |
| Readmission | 0.63 (0.61-0.65) | NA | NA | NA | NA |
| ICU admission | 0.74 (0.72-0.75) | NA | NA | NA | NA |
Abbreviations: ASA, American Society of Anesthesiology; AUC, area under the receiver operating characteristic curve; CCI, Charlson Comorbidity Index; DCRA, Dutch ColoRectal Audit; ICU, intensive care unit; NA, not applicable; POSPOM, preoperative score to predict postoperative mortality.
a
Reported P values are in comparison with the best machine learning model and were calculated using the test of DeLong et al.34