Prognostic impact of post-chemoradiotherapy muscle quality in non-elderly adults with esophageal squamous cell carcinoma

Figure 4 Prognostic model construction and validation based on post-treatment skeletal muscle density in patients aged < 64 years with esophageal squamous cell carcinoma. A: Kaplan-Meier survival curves stratified by risk score; B: Time-dependent receiver operating characteristic curves of the model; C and D: Bootstrap-based calibration curves for 12-month and 36-month overall survival prediction; E and F: Calibration curves for 12- and 36-month survival prediction. FPR: False positive rate; TPR: True positive rate; AUC: Area under the curve; SMD: Skeletal muscle density.