Fig. 3

ROC curves are plotted based on different models. A ROC curve and AUC of the nomogram to predict 1-, 3- and 5-year overall survival in the training cohort. B ROC curve and AUC of nomogram in the validation cohort. C ROC curve and AUC of SII in the total cohort. D ROC curve and AUC of TNM staging system in the total cohort. Calibration curves and Kaplan–Meier curves of the nomogram. E Calibration curves of nomogram in the training and validation cohort F predict 1-, 3- and 5-year overall survival