Construction of a clinical survival prognostic model for middle-aged and elderly patients with stage III rectal adenocarcinoma

Figure 3 Receiver operating characteristic and time-dependent area under the curve. Receiver operating characteristic (ROC) values for the validation cohort are shown in the figure. Area under the curve (AUC) values of the nomogram vs tumor-node-metastases (TNM) stage based on temporal changes are shown. In the training and validation cohorts, the AUC of the nomogram was higher than that of TNM stage. A: Validation cohort overall survival (OS), 3-year survival ROC of cancer-specific survival (CSS) (OS AUC: 0.762; CSS AUC: 0.770); B: Validation cohort OS, 5-year survival ROC of CSS (OS AUC: 0.722; CSS AUC: 0.744); C: Time-dependent AUC curve of OS between the training cohort and validation cohort (nomogram and TNM stage); D: Time-dependent AUC curve of CSS between the training cohort and validation cohort (nomogram and TNM stage). ROC: Receiver operating characteristic; AUC: Area under the curve; OS: Overall survival; CCS: Cancer-specific survival; TNM: Tumor-node-metastases.