Multivariate analysis of independent prognostic factors for patients with nasopharyngeal carcinoma (n = 1547).

Abbreviation: OS  =  Overall Survival; DFS  =  Disease-Free Survival; DMFS  =  Distant Metastasis-Free Survival; LRRFS  =  Loco-Regional Recurrence-Free Survival; CRT  =  chemoradiotherapy; RT  =  radiotherapy; LMR  =  lymphocyte-to-monocyte ratio; HR  =  Hazard Ratio, derived from COX proportional hazard model. In this analysis, T status, N status and tumor stage were divided into two groups. For T status: T1-2 and T3-4; for N status:N0-1 and N2-3; for tumor stage: I–II and III–IV.