Table IV.

Univariate and multivariate analysis of the factors that may affect underestimation of tumor depth in cT1 upper third gastric cancer that can be detected before the operation.

	Univariate analysis			Multivariate analysis
	Odds ratio	95% CI	P-value	Odds ratio	95% CI	P-value
Age (years)	1.01	0.92–1.10	0.879
Male/female
Male	1.14	0.21–8.91	0.883
Body mass index	0.98	0.70–1.32	0.893
Tumor size
≥20 mm	5.29	0.80–105.1	0.087	9.46	1.04–318.7	0.046
Gross type
Depressed	1.16	0.23–13.8	0.625
Histology
Diffuse type	8.33	1.32–71.6	0.024	14.01	1.69–306.0	0.013