Development and validation of novel nomograms to predict survival of patients with tongue squamous cell carcinoma

Figure 4 Receiver operating characteristic curves of the nomograms and tumor-node-metastasis staging system for overall survival and cancer-specific survival in patients with squamous cell carcinoma of the tongue. A: Receiver operating characteristic curves (ROC) for 3-year overall survival (OS) in the training cohort; B: ROC for 5-year OS in the training cohort; C: ROC for 3-year OS in the validation cohort; D: ROC for 5-year OS in the validation cohort; E: ROC for 3-year cancer-specific survival (CSS) in the training cohort; F: ROC for 5-year CSS in the training cohort; G: ROC for 3-year CSS in the validation cohort; H: ROC for 5-year CSS in the validation cohort. TNM: Tumor-node-metastasis.