Differential analysis of lymph node metastasis in histological mixed-type early gastric carcinoma in the mucosa and submucosa

Table 5 Risk factors for lymph node metastasis in mucosa-confined early gastric carcinoma

Variable	Univariate analysis			Multivariate analysis
	OR	95%CI	P value	OR	95%CI	P value
Age (yr)			0.082
≤ 60	1.00
> 60	0.31	0.08-1.16
Size (cm)	1.36	0.90-2.06	0.145
Gender			0.005			0.028
Male	1.00			1.00
Female	5.89	1.72-20.17		5.83	1.64-20.70
Location			0.630
U	1.00
M/L	1.47	0.31-6.95
LV invasion			0.013			0.020
Absent	1.00			1.00
Present	13.64	1.75-106.28		13.18	1.39-125.30
Gross type			0.253
Elevated	1.00
Flat/depressed	2.17	0.58-8.22
Ulcer			0.199
Absent	1.00
Present	2.14	0.67-6.85
H. pylori infection			0.244
Absent	1.00
Present	0.50	0.15-1.61
Histological type			0.035			0.106
Pure D	1.00
Pure U	5.33	1.32-21.63	0.019	4.46	0.99-20.00	0.051
Mixed-type	6.86	1.26-37.77	0.026	5.31	0.86-33.01	0.073

PD: Pure differentiated; PU: Pure undifferentiated; U: Upper; M/L: Middle/lower; LV: Lymphovascular.