Correlation between the geographical origin of Helicobacter pylori homB-positive strains and their clinical outcomes: a systematic review and meta-analysis

Table 1 Characteristics of included studies

First author	Publication year	Country	Population size	H. pylori strains	homB expressing H. pylori strains					Diagnostic method	Refs.
First author	Publication year	Country	Population size	H. pylori strains	Gastritis or NUD	PUD	DU	GU	GC	Diagnostic method	Refs.
Oleastro et al.	2006	Portugal	45	45	11	12	NA	NA	NA	Culture-PCR	19
Oleastro et al.	2008	Portugal	190	190	18	25	NA	NA	NA	Culture-PCR	20
Jung et al.	2009	Japan	286	286	79	50	50	NA	46	Culture-PCR	21
Oleastro et al.	2009	Portugal	372	372	113	150	NA	NA	NA	Culture-PCR	22
Oleastro et al.	2010	Portugal	117	117	21	41	NA	NA	NA	Culture-PCR	23
Hussein et al.	2011	Iraq	134	126	25	15	NA	NA	NA	Culture-PCR	24
Abadi et al.	2011	Iran	138	138	15	13	NA	NA	32	Culture-PCR	25
Khamis et al.	2018	Iraq	471	194	47	42	NA	NA	72	Culture-PCR	26
Šterbenc et al.	2018	Slovenia	343	285	106	3	NA	NA	NA	RUT-PCR	7
Casarotto et al.	2019	Italy	340	53	NA	NA	NA	NA	1.11 (0.31 − 3.91)	Culture-PCR	28
YJlmaz et al.	2019	Turkey	214	82	2	1	NA	1	NA	Culture-PCR	29
Haddadi et al.	2020	Iran	280	128	10	27	NA	NA	9	Culture-PCR	30

ISSN: 1471-230X