Table 3.

Univariate Cox regression analysis of overall survivals

Variables	Overall survival
	HR (95 % CI)	P value
Age (<55/≥55)	0.873 (0.558–1.365)	0.551
Gender (male/female)	1.078 (0.677–1.717)	0.752
Smoking (no/yes)	0.750 (0.481–1.171)	0.205
T stage (T1–T2/T3–T4)	1.339 (0.861–2.084)	0.196
TNM stage (I–II/III–IV)	6.060 (3.298–11.135)	0.000*
Tumor-node-metastasis (N/P)	11.021 (5.723–21.221)	0.000*
Distant metastasis (N/P)	5.813 (3.360–10.056)	0.000*
SBP1 expression (0–2/3–6)	0.385 (0.236–0.628)	0.000*

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

*P < 0.05