Clinical relevance of Helicobacter pylori babA2 and babA2/B in Costa Rica and Japan

Table 3 H. pylori babA2, babB and babA2/B genes according to atrophic gastritis in Costa Rican and Japanese patients

	Costa Rican patients				Japanese patients
Gene	AG/NAG	P	OR	95% CI	AG/NAG	P	OR	95% CI
babA2
Pos	27/43	0.01	7.80	1.63-37.40	46/46	0.88	0.82	0.06-10.70
Neg	2/23		1.00	(Ref.)	2/1		1.00	(Ref.)
babB
Pos	25/52	0.54	1.47	0.42-5.12	45/41	0.18	3.00	0.61-14.70
Neg	4/14		1.00	(Ref.)	3/6		1.00	(Ref.)
babA2/B
Pos	6/5	0.10	3.07	0.80-11.80	0/1	1.00	0.00
Neg	23/61		1.00	(Ref.)	48/46		1.00	(Ref.)

Pos: Positive; Neg: Negative; OR: Odds ratio; CI: Confidence intervals. Separate models were fitted to obtain an odds ratio for each gene with adjustment for gender and age in each country. P < 0.05 was considered significant.