Table VIII.

Cox analysis of the overall survival of patients with esophageal squamous cell carcinoma.

						HR 95% CI
Variables	B	SE	Wald	P-value	HR	Lower	Higher
Snail	0.352	0.165	4.531	0.033	1.422	1.028	1.966
Lymph node metastasis	0.33	0.226	2.128	0.145	1.391	0.893	2.168
TNM stage	0.208	0.144	2.077	0.149	1.231	0.928	1.634
Nerve invasion	0.577	0.182	10.036	0.002	1.78	1.246	2.543
Radiotherapy or chemotherapy	−0.607	0.174	12.207	<0.001	0.545	0.388	0.766

HR, hazard ratio.