Evaluation of the 7th edition of the TNM classification in patients with resected esophageal squamous cell carcinoma

Figure 3 Survival curves for patient subgroups stratified according to the 7^th edition TNM pStage groupings. The 5-year survival rate, the number of patients in each subgroup, and the P-value for comparison between each adjacent subgroup are indicated. The survival curves showed stepwise reduction as the pStage increased, and there were significant differences between each adjacent pStage group.