Fig. 1From: Treatment outcomes and radiotherapy deintensification strategies in human papillomavirus-associated tonsil cancerKaplan–Meier curves for overall survival (OS), progression-free survival (PFS), and locoregional failure (LRF) according to the primary treatment before and after propensity score matching (PSM). (A) OS, (B) PFS, and (C) cumulative incidence of LRF for all patients. (D) OS, (E) PFS, and (F) cumulative incidence of LRF for matched patients. PSM, propensity score matching; RT, radiotherapyBack to article page