Table 3. Relationship between overall survival and clinicopathologic features of esophageal ESCC.

Variables	Univariate			Multivariate
	χ2	P		OR	95% CI	P
Gender	0.165	0.684		–	–	–
Age	0.094	0.759		–	–	–
Location	1.889	0.169		–	–	–
Length	0.009	0.925		–	–	–
PT	4.766	0.029		2.548	0.881-7.367	0.084
Differentiation	3.871	0.049		2.955	1.000-8.729	0.050
LVI	22.02	<0.001		8.933	3.193-24.988	<0.001

Note: pT, pathological T stage.