TABLE 4.

Summary of models' performance in the training and validation cohorts.

Cohorts	Models	AUC (95% CI)	Sensitivity	Specificity	PPV	NPV	Accuracy
Training cohort	Nomogram	0.908 (0.839–0.954)	0.727	0.855	0.762	0.831	0.805
	PPF radiomics signature	0.835 (0.754–0.898)	0.704	0.797	0.689	0.809	0.761
	Intratumoral radiomics signature	0.822 (0.739–0.888)	0.591	0.841	0.703	0.763	0.743
Validation cohort	Nomogram	0.886 (0.763–0.959)	0.737	0.867	0.778	0.838	0.816
	PPF radiomics signature	0.833 (0.699–0.924)	0.684	0.833	0.722	0.806	0.775
	Intratumoral radiomics signature	0.751 (0.607–0.863)	0.526	0.900	0.769	0.750	0.755

Abbreviations: AUC, area under the receiver operating characteristic curve; CI, confidence interval; NPV, negative predictive value; PPF, periprostatic fat; PPV, positive predictive value.