Development and Validation of Nomograms to Assess Risk Factors and Overall Survival Prediction for Lung Metastasis in Young Patients with Osteosarcoma: A SEER-Based Study

Figure 8

Risk stratification for young osteosarcoma patients with LM. The survival curve of two risk groups in the training set (a), internal validation set (b), and external validation set (c); a scatter diagram to show the survival status of patients in the training set (d), internal validation set (e), and external validation set (f).

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