TABLE 3.

Gastric juice IgA antibody reactivities to two different VacA antigens

Patient classification	No. of patients	ELISA OD values by type of VacA antigen
		s1/m1	s2/m2
H. pylori negative	19	−0.04 ± 0.01	−0.03 ± 0.01
H. pylori positive	39	0.45 ± 0.01a	0.14 ± 0.06
s1m1	19	0.73 ± 0.26b	0.20 ± 0.10c
s1m2	12	0.35 ± 0.22	0.15 ± 0.014
s2m2	8	−0.004 ± 0.04	−0.006 ± 0.02

^aP = 0.002 compared with values obtained for the H. pylori-negative group. 

^bP = 0.004 compared with values obtained for the H. pylori-negative group. 

^cP = 0.02 compared with values obtained for the H. pylori-negative group.