Fig. 5
From: Development and validation of a risk prediction score for patients with nasopharyngeal carcinoma
Kaplan–Meier analyses of OS according to the risk score classifier in subgroups of NPC patients in the primary cohort (A–D) and the validation cohort (E, H): total patients (A, E); stage I/II (B, F); stage III (C, G); stage IV (D, H)