The Different Dose-Volume Effects of Normal Tissue Complication Probability Using LASSO for Acute Small-Bowel Toxicity during Radiotherapy in Gynecological Patients with or without Prior Abdominal Surgery

Table 3

System performance evaluation.

Group	Cutoff dose	AUC (range)	Accuracy (range)	𝑅^2	Brier	Slope of calibration curve	HL
0	V16 Gy	0.90 (0.79–0.95)	0.81 (0.70–0.87)	0.98	0.10	0.99	0.14
1	V40 Gy	0.96 (0.91–0.99)	0.90 (0.83–0.93)	0.99	0.07	0.99	0.88

AUC: area under the receiver operating characteristic curve; HL: Hosmer-Lemeshow test.
Group 0: patients without prior abdominal surgery; group 1: patients with prior abdominal surgery.