Summary of multivariate analysis of prognostic factors in 481 nasopharyngeal carcinoma patients with retropharyngeal lymph node metastasis (RLN) metastasis.

Abbreviations: CI = confidence interval, MID = minimal axial diameters. *P values were calculated using an adjusted Cox proportional-hazards model. The following known important prognostic variables were included in the Cox proportional hazards model: minimal axial diameters of RLN (<10 vs. ≥10 mm MID), necrosis of RLN (no vs. yes), laterality of RLN (unilateral vs. bilateral) and extra nodal neoplastic spread of RLN (no vs. yes), age (≤50 vs. 50), sex, T-classification, N-classification and chemotherapy (no vs. yes). Summary of multivariate analysis of prognostic factors in 481 nasopharyngeal carcinoma patients with retropharyngeal lymph node metastasis (RLN) metastasis.