Table 4.

Preoperative and postoperative ML models for each outcome

	Mortality		Major Morbidity or Mortality		High Cost		30-day Readmission
	Preoperative	Postoperative	Preoperative	Postoperative	Preoperative	Postoperative	Preoperative	Postoperative
AUC-PR	0.16 (0.05–0.38)	0.21 (0.08–0.44)	0.33 (0.29–0.44)	0.39 (0.29–0.51)	0.51 (0.40–0.62)	0.64 (0.53–0.74)	0.47 (0.34–0.61)	0.47 (0.34–0.61)
AUC-ROC	0.77 (0.66–0.87)	0.68 (0.54–0.81)	0.69 (0.62–0.76)	0.70 (0.63–0.77)	0.75 (0.69–0.81)	0.83 (0.78–0.88)	0.73 (0.65–0.81)	0.73 (0.66–0.81)
Accuracy	0.97	0.98	0.75	0.71	0.77	0.83	0.70	0.72
F1 Score	0.24	0.31	0.42	0.42	0.52	0.61	0.49	0.52

AUC: Area under the curve, ROC: Receiver operator characteristics; PR: Precision-Recall.