Association of Helicobacter pylori Infection with Glycemic Control in Patients with Diabetes: A Meta-Analysis

Table 2

Characteristics of studies included in the meta-analysis.

Author	Year	Country	Type of; diabetes	Men; (%)	Mean age; (year)	Duration of diabetes (year)	Mean BMI	Number of participants		Mean HbA1c value (%)		Method for identifying HP infection
								HP infected	HP non-infected	HP infected	HP non-infected
Vafaeimanesh et al. [24]	2014	Iran	T2DM	36.0	52.5	7.4	29.0	139	82	8.11	8.08	HP-specific IgG using EIA
Senmaru et al. [16]	2013	Japan	T2DM	58.9	66.3	15.1	22.8	187	146	7.4	7.3	HP-specific IgG using EIA
El-Eshmawy et al. [22]	2011	Egypt	T1DM	44.5	19.4	7.3	NA	128	34	8.3	6.8	HP-specific IgA and IgG using EIA
Tanriverdi [15]	2011	Turkey	T2DM	52.7	55.4	2.9	28.2	53	40	6.9	6.1	Biopsy
Fernandini-Paredes et al. [11]	2008	Chile	T2DM	46.7	52.8	8.2	NA	49	26	7.7	7.3	[13C]urea breath test and biopsy
Demir et al. [12]	2008	Turkey	T2DM	32.2	52.0	6.1	NA	87	54	7.9	8.7	Biopsy
Hamed et al. [18]	2008	Egypt	T1DM and T2DM	48.8	47.5	9.2	28.8	68	12	8.1	8.3	HP-specific IgG using EIA
Gulcelik et al. [13]	2005	Turkey	T2DM	30.8	51.9	6.9	26.0	59	19	8.2	7.9	Biopsy
Candelli et al. [19]	2003	Italy	T1DM	54.5	14.8	6.6	20.9	34	87	8.3	8.2	[13C]urea breath test
Colombo et al. [20]	2002	Italy	T1DM	52.9	12.0	5.5	NA	41	97	7.8	8.6	HP-specific IgA and IgG using EIA
Ko et al. [14]	2001	China	T2DM	46.0	49.9	6.2	NA	32	31	8.1	8.4	Biopsy
Arslan et al. [23]	2000	Turkey	T1DM	40.9	12.6	10.7	NA	49	39	11.1	10.2	HP-specific IgG using EIA
Begue et al. [21]	1999	USA	T1DM	50.7	11.3	3.6	20.0	11	60	14.9	11.8	HP-specific IgG using EIA
de Luis et al. [17]	1998	Spain	T1DM and T2DM	50.4	60.2	16.1	28.8	53	74	7.1	7.2	HP-specific IgG using EIA

Abbreviations: HP: Helicobacter pylori; EIA: enzyme immunoassay; IgA: immunoglobulin A; IgG: immunoglobulin G; T1DM: type 1 diabetes mellitus; T2DM: type 2 diabetes mellitus.