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Validation of model to predict the prognosis of patients with osteosarcoma. (A) Area under the receiver operating characteristic curve (AUC) analysis of the prognostic model. (B) Nomogram to predict patient prognosis based on prognostic model and clinical manifestations. (C) A calibration plot evaluating the consistency of the nomogram. OS, overall survival. (D, E) Univariate and multivariate Cox regression analyses of the prognostic model and clinical features.
