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 4

Prognostic nomogram for predicting the overall survival of young osteosarcoma patients with LM (a); three time-dependent receiver characteristic curves to show the discrimination of prognostic nomogram in the training set (b), internal validation set (c), and external validation set (d).

(a)

(b)

(c)

(d)