Gastroenterology Research and Practice

Review Article

Systematic Review with Meta-analysis: Association of Helicobacter pylori Infection with Esophageal Cancer

Table 1

Characteristics of literatures included in the meta-analysis.


First author	Study country	Ethnicity	Study type	Study object	Age	Sex^§ (% male)	Matched	Follow-up

Talley et al.	America	Caucasians	Case-control	Clin (S)	63	49	Yes	—
Chow et al.	America	Caucasians	Case-control	Pop (A)	—	—	Yes	—
Grimley et al.	America	Caucasians	Case-control	Clin (A)	70	70-78	No	—
Öberg et al.	America	Caucasians	Case-control	Clin (A)	—	—	No	—
Peek et al.	America	Caucasians	Case-control	Clin (A)	61	97	No	—
Vieth et al.	Germany	Caucasians	Case-control	Clin (A)	—	—	—	—
Weston et al.	America	Caucasians	Case-control	Clin (A)	60.6	100	No	—
Henrik et al.	Sweden	Caucasians	Case-control	Pop (S, A)	49.6	—	No	—
Wu et al.	America	Caucasians	Case-control	Pop (A)	—	—	Yes	—
El-Omar et al.	America	Caucasians	Case-control	Pop (S, A)	S: 66 A: 65	S: 89 A: 86	S: No A: Yes	—
Wang et al.	China	Mongolians	Case-control	Pop (S)	—	—	No	—
Ye et al.	Sweden	Caucasians	Case-control	Pop (S, A)	S: 64 A: 69	S: 69 A: 91	No No	—
De Martel et al.	America	Caucasians	Case-control	Pop (A)	47.9	80.4	Yes	—
Wu et al.	China	Mongolians	Case-control	Pop (S)	—	91.3	No	—
Anandasabapathy et al.	America	Caucasians	Case-control	Clin (A)	59.23	94.3	No	—
Kamangar et al.	China	Mongolians	Case-control	Pop (S)	54.5	46.3	No	—
Iijima et al.	Japan	Mongolians	Case-control	Clin (S)	68.6	90.4	No	—
Simán et al.	Sweden	Caucasians	Case-control	Pop (S, A)	S: 50.6 A: 49.3	S: 81.1 A: 91.7	No No	—
Anderson et al.	Ireland	Caucasians	Case-control	Pop (A)	64.2	84	No	—
Früh et al.	Canada	Caucasians	Case-control	Clin (A)	64	88	Yes	—
Löfdahl et al.	Sweden	Caucasians	Case-control	Pop (A)	—	—	No	—
Derakhshan et al.	Iran	Caucasians	Case-control	Clin (A)	63.9	63.2	No	—
Wu et al.	China	Mongolians	Case-control	Pop (S)	58.3	95	—	—
Hu et al.	China	Mongolians	Case-control	Clin (S)	—	97	Yes	—
Whiteman et al.	Australia	Australian	Case-control	Pop (S, A)	—	S: 58 A: 92	No No	—
Cook et al.	Finland	Caucasians	Case-control	Pop (S)	57.7	—	No	—
Venerito et al.	Germany	Caucasians	Case-control	Clin (S)	64.9	69.3	No	—
Khoshbaten et al.	Iran	Caucasians	Case-control	Clin (S)	63.9	64	No	—
Murphy et al.	Finland	Caucasians	Case-control	Pop (S)	57.9	—	No	—
Xue et al.	China	Mongolians	Cohort	Pop (S)	45.29	36.91	—	15 y
Obayo et al.	Uganda	Negroes	Case-control	Clin (S)	—	—	—	—
Poyrazoglu et al.	Iran	Caucasians	Case-control	Clin (S)	—	—	No	—
Sonnenberg et al.	America	Mixed race	Case-control	Clin (A)	66.8	79.3	No	—
Tseng et al.	China	Mongolians	Case-control	Pop (S)	—	—	—	—
Vohlonen et al.	Finland	Caucasians	Cohort	Pop (S, A)	—	100	No	15 y

Note: average or median age in case group; ^§the proportion of males in the case group; does the case group match the age, sex, or race of the control group? Clin: clinical-based; Pop: population-based; S: esophageal squamous cell carcinoma; A: esophageal adenocarcinoma.