Figure 5. Correlation between the risk score and the clinicopathological characteristics of HNSCC patients. (A) Univariate Cox regression analysis of clinicopathological parameters of the patients in the TCGA training set. (B) Multivariate Cox regression analysis of the clinicopathological parameters of the patients in the TCGA training set. (C) Subgroup analysis of pathology grade (Grades 1+2 vs. Grades 3+4). (D) Subgroup analysis of clinical stage (Stages I+II vs. Stages III+IV). (E) Subgroup analysis of T classification (T 1+2 vs. T 3+4). (F) Subgroup analysis of N classification (N0 vs. N+). (G) Subgroup analysis of M classification (M 0 vs. M 1). (H) Nomogram for OS of HNSCC patients.