Fig. 2

Receiver operating characteristic curve (ROC) of Model 1 and Model 2 for predicting prostate cancer risk. The y-axis represents the true positive rate of the risk prediction, the x-axis represents the false positive rate of the risk prediction. The thick blue line represents the performance of the predictive model and the light blue dotted line represents the 95% CI in the training set of Model 1(A) and Model 2(B) and the validation set of Model 1(C) and Model 2(D)