. 2021 Feb;9(4):305. doi: 10.21037/atm-20-5472

Table 3. Performance for prediction model of posthepatectomy liver failure.

Performance index	Derivation cohort	Validation cohort	Internal validation-corrected index (95% CI)*
Performance index	Derivation cohort	Validation cohort	Derivation cohort	Validation cohort
AUC (95% CI)	0.726 (0.696–0.760)	0.717 (0.663–0.770)	0.711 (0.682, 0.739)	0.718 (0.666, 0.765)
Intercept	0.000	0.000	0.021 (−0.113, 0.154)	−0.012 (−0.286, 0.218)
Slope	1.000	1.000	0.92 (0.783, 1.067)	1.019 (0.76, 1.348)
Brier scaled	0.207	0.207	0.213 (0.203, 0.224)	0.209 (0.194, 0.229)
R²	0.202	0.180	0.176 (0.124, 0.223)	0.18 (0.088, 0.254)

*, the 1,000 bootstrap resampling method was implied to perform internal validation in the derivation and validation cohort. AUC, area under receiver operating characteristic curve.