Fig. 4

Validation of the prognostic risk model for HNSCC patients based on mcrmRNA using data from TCGA database. Risk score distribution (A-C), survival status (D-F), PCA (G-I), survival status box plots (J-L), Kaplan–Meier survival analysis for overall survival (OS) in the training, testing, and entire sets for high- and low-risk groups (M–O), and calibration plots (P-R)