Figure 3 Construction and assessment of nomogram for predicting patients’ overall survival. Nomogram based on the clinical characteristics and glutathione peroxidase 1 expression for predicting patient survival (A). The calibration curve for predicting patient survival at 2 years (B), 3 years (C), and 5 years (D). The predictive efficiency of risk score, World Health Organization grade, and age showed by the receiver operating characteristic curves based on 2-, 3-, and 5-year survival rates (E–G).