KCNQ1 rs2237895 gene polymorphism increases susceptibility to type 2 diabetes mellitus in Asian populations

Table 1 Characteristics of the included literature

Ref.	Ethnicity	N		Age (yr)		Case			Control
		Case	Control	Case	Control	AA	AC	CC	AA	AC	CC
Cui et al[7], 2016	Kazakh	100	100	51.21 ± 11.60	49.85 ± 12.41	40	49	11	32	51	17
Khan et al[10], 2020	Indian	300	100	40.33 ± 9.76	35.29 ± 7.96	90	153	57	50	36	14
Liu et al[12], 2009	Chinese	1885	1994	63.9 ± 9.50	58.10 ± 9.40	790	886	209	942	883	169
Zhang[13], 2010	Chinese	100	97	63.90 ± 9.50	58.1 ± 9.40	25	36	39	43	34	20
Dai et al[14], 2012	Chinese	367	214	49.13 ± 10.79	47.55 ± 10.93	134	168	65	99	87	28
Li et al[15], 2020	Chinese	1194	1292	52.49 ± 12.10	52.70 ± 10.52	509	568	117	621	552	119
Hu et al[16], 2021	Chinese	277	279	52.26 ± 9.49	52.26 ± 9.49	121	123	33	145	113	21
Saif-Ali et al[17], 2011	Malaysian	300	230	49.80 ± 7.42	52.90 ± 9.15	123	147	30	120	96	14
Almawi et al[18], 2013	Arabs	995	1076	58.6 ± 13.40	57.30 ± 10.40	324	497	174	413	511	152
Al-Shammari et al[19], 2017	Arabs	320	516	51.50 ± 8.75	48.75 ± 6.85	122	150	58	202	223	91
van Vliet-Ostaptchouk et al[20], 2012	Dutch	4549	5182	64.36 ± 10.6	51.16 ± 10.10	1522	2158	869	1803	2516	863
Turki et al[21], 2012	Arabs	886	574	61.20 ± 9.70	52.00 ± 11.9	350	429	107	233	261	80