Table 4.

Multivariate Cox regression analysis of overall survivals

Variables	Overall survival
	HR (95 % CI)	P value
TNM stage (I–II/III–IV)	0.421 (0.182–0.973)	0.043*
Tumor-node-metastasis (N/P)	0.203 (0.087–0.470)	0.000*
Distant metastasis (N/P)	0.380 (0.213–0.677)	0.001*
SBP1 expression (0–2/3–6)	2.228 (1.329–3.737)	0.002*

HR hazard ratio, 95 % CI 95 % confidence interval, N negative, P positive

*P < 0.05