Table 2.

 Association of subgroups classified according to serum pepsinogen and Helicobacter pylori antibody status

	Group A	Group B	Group C	Group D
No of subjects	3324	2134	1082	443
Gastric cancer	7	6	18	12
Annual incidence rate (%/y)	0.04	0.06	0.35	0.60
Histopathological features
Site*
Cardia	2	0	0	0
Non-cardia	5	6	18	12
Differentiation
Intestinal	5	5	14	10
Diffuse	2	1	4	2

*p = 0.0148 by Kruskal-Wallis test with Bonferroni’s correction.