Summary of multivariate analysis of prognostic factors in 749 patients with nasopharyngeal carcinoma.

Abbreviations: CI = confidence interval; HR = hazard ratio; CLN = cervical lymph nodes; NS = not significant; SCLN = Supraclavicular lymph node. *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: age (≤50 vs. >50 years), gender, T-classification, chemotherapy (yes vs. no), bilateral CLN metastasis (yes vs. no), dimension of CLN metastases (≤6 vs. >6 cm), CLN location (with SCLN vs. without SCLN) and RLN metastasis (yes vs. no). Summary of multivariate analysis of prognostic factors in 749 patients with nasopharyngeal carcinoma.