Table 5. Univariate and multivariate analysis for predicting pT0–2N0.

Variable	Univariate				Multivariate
	OR	95% CI	P		OR	95% CI	P
Age	0.99	0.98–0.99	0.03		0.99	0.98–0.99	0.02
Gender
Male	Ref	Ref	Ref		Ref	Ref	Ref
Female	0.76	0.60–0.96	0.02		0.81	0.63–1.05	0.11
Location
Middle	Ref	Ref	Ref		Ref	Ref	Ref
Lower	1.42	0.99–2.04	0.06		1.33	0.88–2.00	0.17
GEJ	1.73	1.21–2.47	0.003		1.66	1.10–2.52	0.02
Overlap	1.21	0.59–2.51	0.6		1.16	0.54–2.50	0.7
Tumor length
≤3 cm	Ref	Ref	Ref		Ref	Ref	Ref
>3 cm	2.29	1.90–2.76	<0.001		2.17	1.78–2.63	<0.001
Grade
Well/moderate	Ref	Ref	Ref		Ref	Ref	Ref
Poor	2.38	1.97–2.87	<0.001		2.21	1.82–2.69	<0.001
Histology
Adenocarcinoma	Ref	Ref	Ref		Ref	Ref	Ref
Squamous cell	0.91	0.69–1.20	0.5		1.2	0.85–1.67	0.3
Facility volume
Low (<10/year)	Ref	Ref	Ref		Ref	Ref	Ref
Medium (10–20/year)	0.8	0.64–1.02	0.07		0.87	0.68–1.12	0.28
High (>20/year)	1.23	0.97–1.57	0.08		1.3	1.01–1.68	0.04

GEJ, gastroesophageal junction.