Table 5. Multivariate analysis of clinicopathological variables for the survival of the patients with lung cancer.

Parameters	95.0% CI for Exp(B)	p value
Country	1.603(0.722-3.559)	0.246
Sex	0.811(0.506-1.300)	0.384
Age	0.981(0.632-1.524)	0.934
Tumor size	2.158(1.364-3.416)	0.001
Lymph node metastasis	1.619(1.020-2.570)	0.041
TNM staging	0.833(0.520-1.334)	0.446
Histological subtyping	0.874(0.604-1.264)	0.474

CI=confidence interval