Verification of the nomogram prediction model
ROC curve of training cohort’s nomogram was drawn to predict the OS of patients at 1, 3, and 5 years, and then calculated their AUC values to be 0.766, 0.726, and 0.746 (Fig. ROC curves and AUC values for 1-, 3- and 5-year overall survival predictions in training cohort (Calibration plots of the nomogram describing 1-, 3- and 5-year OS in training cohort (