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(A) Meta-analysis of the associated HRs of OS for CCRT–CCT compared with CCRT alone. (B) Subgroup analysis of the associated HRs of OS for CCRT–CCT compared with CCRT alone. HR, hazard ratio; OS, overall survival; 95% CI, 95% confidence interval; CCRT–CCT, consolidation chemotherapy following concurrent chemoradiotherapy; CCRT alone, only concurrent chemoradiotherapy.
