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Table 2 Multivariate analysis on the prognostic factors of survival

From: Influence of gender and age on the survival of patients with nasopharyngeal carcinoma

  RR 95% CI P X 2
  Lower Upper   
OS Sex (male or female) 0.171 0.068 0.427 0.000 14.274
TNM Stage 1.915 1.125 3.260 0.017 5.723
Intracranial invasion 3.850 1.867 7.940 0.000 13.324
Supraclavicular LNM 2.458 1.149 5.257 0.020 5.375
LN extracapsular extension 3.183 1.854 5.464 0.000 17.642
DPFS Sex (male or female) 0.499 0.277 0.900 0.021 5.331
TNM Stage 2.320 1.530 3.517 0.000 15.702
LN extracapsular extension 2.411 1.419 4.099 0.001 10.573
LN necrosis 1.748 1.043 2.928 0.034 4.501
DMFS Sex 0.483 0.243 0.961 0.038 4.302
TNM stage 2.200 1.383 3.499 0.001 11.081
LN extracapsular extension 3.680 2.115 6.405 0.000 21.244
LPFS Post-styloid Parapharyngeal invasion 2.852 1.077 7.549 0.035 4.452
Intracranial invasion 5.316 1.613 17.521 0.006 7.536
RPFS Supraclavicular LNM 5.415 1.363 21.504 0.016 5.762
  LN extracapsular extension 5.148 1.450 18.270 0.011 6.427
  1. OS = overall survival, DPFS = disease progression-free survival, DMFS = distant metastasis-free survival, LPFS = local progression-free survival, RPFS = regional progression-free survival, LN = lymph node, LNM = lymph node metastasis.