Table 2. AUCs and 95% CIs for lasso, random forest, and extreme gradient boosted decision trees for 14 postoperative outcomes.
| Outcome | AUC (95% CI) | ||
|---|---|---|---|
| Lasso | Random forest | Extreme gradient boosted decision trees | |
| Any complication | 0.836 (0.825, 0.846) | 0.829 (0.819, 0.840) | 0.835 (0.825, 0.846) |
| Cardiac | 0.880 (0.867, 0.893) | 0.879 (0.860, 0.888) | 0.883 (0.871, 0.896) |
| 30-day mortality | 0.916 (0.883, 0.950) | 0.832 (0.761, 0.903) | 0.861 (0.805, 0.917) |
| Endocrine | 0.815 (0.779, 0.850) | 0.798 (0.760, 0.837) | 0.828 (0.795, 0.861) |
| Gastrointestinal | 0.820 (0.790, 0.849) | 0.781 (0.749, 0.813) | 0.804 (0.774, 0.836) |
| Genitourinary | 0.781 (0.752, 0.810) | 0.747 (0.717, 0.777) | 0.772 (0.744, 0.801) |
| Hematological | 0.908 (0.890, 0.925) | 0.886 (0.865, 0.908) | 0.906 (0.889, 0.924) |
| Integumentary | 0.845 (0.813, 0.876) | 0.789 (0.749, 0.829) | 0.826 (0.791, 0.860) |
| Neurological | 0.890 (0.864, 0.917) | 0.884 (0.859, 0.909) | 0.890 (0.866, 0.913) |
| Pulmonary | 0.871 (0.851, 0.891) | 0.844 (0.817, 0.870) | 0.875 (0.854, 0.895) |
| Renal | 0.910 (0.891, 0.930) | 0.903 (0.881, 0.925) | 0.909 (0.888, 0.930) |
| Sepsis | 0.835 (0.795, 0.875) | 0.814 (0.773, 0.855) | 0.850 (0.815, 0.885) |
| Shock | 0.924 (0.901, 0.946) | 0.864 (0.821, 0.908) | 0.904 (0.873, 0.936) |
| Vascular | 0.878 (0.843, 0.913) | 0.886 (0.852, 0.921) | 0.890 (0.861, 0.920) |
AUC, area under the receiver operator characteristic curve; lasso, least absolute shrinkage and selection operator.