Fig. 3

Construction of the nomogram predicting patients’ survival in OS. A Univariate Cox regression analysis of clinical characteristics and risk scores. B Construction of the nomogram for survival prediction of patients with OS. C Calibration curve of the nomogram. D ROC curves showing the prediction accuracy of the nomogram. E DCA of the nomogram. OS, osteosarcoma; ROC, receiver operating characteristic; DCA, decision curve analysis