Figure 4

Construction and performance evaluation of nomogram. (A) Construction of a collagen nomogram in the GSE62564 dataset, including gender, age at diagnosis, N-Myc amplification status, COG risk stratification, INSS stage, and risk score. (B,C) Kaplan–Meier survival curve (B) and ROC curve (C) of the nomogram model in the GSE62564 dataset. (D,F) Calibration curves predicting 1, 3, and 5-year survival rates for the nomogram model. In the calibration curves, the diagonal grey dashed line represents a perfect predictive model, and the colored solid line represents the nomogram. A closer alignment of the red solid line to the grey dashed line indicates better predictive performance. –, P > 0.05; *, P < 0.05; ***, P < 0.001.