Table 2.

Independent risk factors of H pylori seropositivity in each group of tested patients (O-87, O-97) (multivariate logistic regression analysis).

	O-87			O-97
Variables Age(years)	Odds ratio	95% CI	p	Odds ratio	95% CI	p
15 – 24	1			1
25 – 34	1.68	(0.63, 4.47)	0.29	3.34	(0.81, 13.73)	0.09
35 – 44	3.28	(1.13, 9.49)	0.02	5.54	(1.41, 21.88)	0.01
45 – 54	6.05	(1.96, 18.65)	0.002	7.12	(1.80, 28.07)	0.005
55 – 64	3.28	(1.19, 9.02)	0.02	13.51	(3.35, 54.51)	< 0.001