Table 3. Univariate and multivariate logistic regression analyses for lymph node metastasis of early gastric cancer.

Factor	Univariate		Multivariate
	OR (95% CI)	P-value	OR (95% CI)	P-value
Age		0.065
⩽65	1.00 (reference)
>65	2.364 (0.936–5.969)
Gender		0.276
Male	1.00 (reference)
Female	1.665 (0.662–4.185)
Localization		0.357
Middle+proximal	1.00 (reference)
Distal	1.586 (0.591–4.253)
Diameter		0.049		0.036
⩽2 cm	1.00 (reference)		1.00 (reference)
>2 cm	2.5 (0.988–6.327)		2.391 (1.057–5.407)
Differentiation		0.039		0.043
Moderately+well	1.00 (reference)		1.00 (reference)
Poorly	2.748 (1.029–7.340)		2.936 (1.033–8.343)
Intravascular tumor thrombi		0.028		0.036
No	1.00 (reference)		1.00 (reference)
Yes	4.167 (1.202–14.442)		3.826 (1.094–13.385)
Lauren classification		0.622
Intestinal	1.00 (reference)
Diffuse+mixed	1.283 (0.476–3.460)
OLFM4 expression		< 0.001		0.001
High	1.00 (reference)		1.00 (reference)
Low	6.275 (2.345–16.791)		4.193 (1.859–9.458)

Abbreviations: 95% CI, 95% confidence interval; OR, odds ratio. P-value<0.05 marked in bold font shows statistical significance.