Table 2.

Characteristics of the four studies about the correlation between Hp and BE dysplasia

Authors	Years	Journal	Hp testing method	Biopsy location	BE	Cases	Hp +	Total	Controls	Hp +	Total
Aghayeva et al. [36]	2019	Dis Esophagus	H*, R†	Antrum	IM‡	BE with dysplasia	5	11	BE without dysplasia	48	72
Sonnenberg et al. [11]	2017	Aliment Pharmacol Ther	H	Stomach	IM	BE without dysplasia or cancer	1972	76,475	Endoscopy	20,683	284,552
						BE with dysplasia or cancer	138	6167	Endoscopy	20,683	284,552
Thrift et al. [57]	2012	Int J Cancer	S§		IM	BE	28	296	Population	73	390
						BE without dysplasia	25	208	Population	73	390
						BE with dysplasia	3	88	Population	73	390
Vieth et al. [65]	2000	Digestion	H	Antrum, Corpus	IM	BE	463	1054	NUD	378	712
						Barrett’s neoplasia (HGD|| or adenocarcinoma)	54	138	NUD	378	712

*: Histology, †: Rapid ureas e t est, ‡: Intestinal metaplasia, §: Serology, ||: High dysplasia