Table 3.

Multivariate analysis for predictors of overall survival in patients with ESCC

Variable	Hazard Ratio	95% Confidence Interval	P value
Tumor class	2.878	1.805–4.576	0.010
Lymph node status	2.921	1.951–3.988	0.015
Stage	3.083	1.259–5.731	0.002
Plasma big ET-1 levels	2.629	1.375–4.054	0.003