Table 1.

Characteristics of included studies selected for meta-analysis

Author.	Year of Publication	Population	Method	Cases (n)	Controls (n)	Overall Sample Size	Count (Genotype)
							Diabetic			Nondiabetic (Control)
							GG	TG	TT	GG	TG	TT
Joshaghani et al.	2020	Iranian	PCR-RFLP	211	202	413	18	77	116	5	48	149
Sánchez et al.	2019	Venezuelan	PCR-RFLP	46	44	90	1	4	41	2	12	30
Nam JS	2018	Korean	PCR	249	131	380	119	108	22	61	60	10
Hussain et al.	2018	Iraqi	PCR-RFLP	400	400	800	33	110	257	8	78	314
Momin AA	2017	Indian	PCR	150	150	300	2	21	127	0	6	144
Sheng T	2016	Korean Chinese	PCR	191	138	329	13	81	97	9	63	66
Saleh R	2016	Bangladeshi	PCR-RFLP	55	40	95	3	19	33	1	12	27
Farooq,R	2018	Indian	PCR-RFLP	400	300	700	40	168	192	24	123	153
Vendramini, M.F.	2010	Japanese Brazilians	PCR	200	200	400	12	95	93	15	85	100
Potapov,V.A.	2008	Russian	PCR	129	117	246	2	10	117	1	8	108
Lee,Y.Y.	2005	Korean	PCR	493	427	920	39	202	252	45	181	201
Al Hannan, F.A.	2016	Bahraini	PCR-RFLP	140	66	206	8	32	100	10	0	56
Ming-Kai Tsa	2014	Taiwan’s Chinese Han	PCR	149	139	288	9	69	71	12	57	70
Amal et al.	2014	Egyptian	PCR-RFLP	296	209	505	34	145	117	10	78	121
Saxena et al.	2012	North Indian	PCR-RFLP	221	205	426	23	55	143	11	46	148
Fatemeh Namvaran	2012	Iranian	PCR	101	128	229	3	31	67	6	21	101