Evaluation quality and clinical usefulness of nomograms
The last component of the nomogram performance assessment was clinical usefulness. To evaluate the prognostic value of the nomogram and TNM staging in elderly patients with LAGC, ROC curves were established, and the AUC was assessed (Fig. Comparison of the ROC curves between the nomogram prediction models and the 8th edition AJCC TNM staging for the prediction of OS (DCA of the OS nomogram models and TNM staging system in the elderly patients with LAGC in the training set (