Fig. 4

Survival analysis, and the nomogram for predicting the probability of patients’ recurrence rate. A K-M survival analyses for the PFS of patients between the high-risk and low-risk subgroups. B Nomogram plots for predicting the probability of recurrence rate in study cohort based on risk score and independent prognostic factors. C The AUC of ROC curve for the nomogram used to predict the 1- and 3-year PFS for our study population was satisfactory (0.803, 95% CI, 0.673 to 0.932; 0.869, 95% CI, 0.757 to 0.981). D Calibration plot depicted good agreement between nomagram predicted and observed 3-year PFS, representing the ideal predictions