Table 2

Multivariate analysis on disease-related survival (Cox proportional hazard model)a

FactorRelative risk (95% confidence interval)P
Lymph node metastasis (+ vs. −)3.8815 (2.4297–6.2006)<0.0001
Tumor stage (T1 vs. T2, T3, T4)1.4229 (1.1557–1.7518)0.0011
YB-1 (positive vs. negative)0.9849 (0.6188–1.5676)0.9490
  • a A multivariate analysis was performed using a Cox proportional hazard model with the following covariates: tumor stage, lymph node metastasis, distant metastasis, histological type, differentiation and expression of YB-1.