Figure 4. Prognostic predictive value of risk score in HNSCC patients. (A, B) Univariate and multivariate Cox regression analyses of the clinical factors of the patients in the TCGA training set, respectively. (C, D) Univariate and multivariate Cox regression analyses of the clinical factors of the patients in TCGA test set, respectively. (E) Nomogram for OS in HNSCC patients.