Characteristics and prognosis of synchronous multiple early gastric cancer

Table 4 Multivariate analysis of risk factors for synchronous multiple early gastric cancer

Factor	Odds ratio	95%CI1	P value
Age (yr)
≥ 65 vs < 65	1.93	1.27-2.99	0.002
Sex
Male vs female	1.86	1.07-3.32	0.028
Family history
(+) vs (-)	1.35	0.87-2.06	0.182
Smoking habit
(+) vs (-)	1.15	0.73-1.89	0.531
Drinking habit
(+) vs (-)	1.51	0.79-3.14	0.218
Macroscopic type
Elevated vs depressed	1.44	0.92-2.23	0.108
Histological type
Differentiated vs undifferentiated	1.53	0.94-2.61	0.088
Depth of invasion
Submucosa vs mucosa	1.61	0.90-2.81	0.109
Lymphatic invasion
(+) vs (-)	0.879	0.50-1.60	0.664

¹Determined using logistic regression analysis.