Fig. 2

Calibration curves and receiver operating characteristic (ROC) Curves. a Calibration curves showing the probability of 1-year OS between the nomogram prediction and the actual observation; b Calibration curves showing the probability of 3-year OS between the nomogram prediction and the actual observation. The prediction probability of the nomogram for OS was plotted on the X-axis, and the actual probability was plotted on the Y-axis. c The ROC curve of nomogram for predicting 1-year survival rate and area under curve (AUC) = 0.606; d The ROC curve of nomogram for predicting 3-year survival rate and AUC = 0.715