Fig. 2From: Developing and validating an integrated gross tumor volume (GTV)-TNM stratification system for supplementing unresectable locally advanced non-small cell lung cancer treated with concurrent chemoradiotherapyThe prognostic validity of the integrated GTV-TNM stratification system, GTV risk group and TNM stage. a The ROC curve comparing these three stratification systems. b F1 score distributions acquired with bootstrap method. Colors indicate validations using Stratum B and Stratum C as predictors for survival outcome. Stars indicate significance between two groupsBack to article page