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Kaplan-Meier analysis of overall survival stratified by chemotherapy (RT vs. CRT) in patients with locoregionally advanced nasopharyngeal carcinoma (A), ACE-27 score < 2 (B), and ACE-27 score ≥ 2 (C). HR, hazard ratio; CI, confidence interval; RT, radiotherapy; CRT, chemoradiotherapy; ACE-27, Adult Comorbidity Evaluation 27.
