Risk factors, prognostic factors, and nomograms for distant metastasis in patients with diagnosed duodenal cancer: A population-based study

Figure 7 Time-dependent receiver operating characteristic curve analysis and kaplan-meier survival curves in the training and validation sets. A: Time-dependent receiver operating characteristic curve analysis of the nomogram for the 12, 36, and 60 months in the training set; B: Time-dependent receiver operating characteristic curve analysis of the nomogram for the 12, 36, and 60 months in the validation set; C: The Kaplan-Meier (K-M) survival curves of the patients in the training set; D: The K-M survival curves of the patients in the validation set.