Table 3.

Multivariate analysis of lymph node metastases in early gastric cancer for the entire study population

	RR	95%CI	P1
Tumor site	1.159	0.84-1.478	0.644
Invasion depth	2.744	2.316-3.172	0.018a
Macroscopic type	0.864	0.57-1.158	0.620
Vessel amblous	4.147	3.242-5.052	0.116
Constant term	0.037	-2.568	0.010

¹Statistically significant, invasion depth: submucosa vs mucosa,

^aP < 0.05.