Table 2.

Prevalence of Helicobacter species in this meta-analysis.

Helicobacter species	Positive in cases	Positive in controls	OR (95% CI)	P value
H. pylori	246/1038	34/470	3.05 (1.81–5.14)	0.000
H. pullorum	6/100	0/102	14.10 (0.78–253.71)	0.073
H. ganmani	1/57	0/22	1.19 (0.05–30.43)	0.914
H. hepaticus	25/60	4/32	5.00 (1.56–16.06)	0.007
H. bilis	20/94	4/39	1.96 (0.59–6.55)	0.273

OR, odds ratio; CI, confidence interval.