Table 1. Characteristics of studies of the association between ADIPOQ-rs2241766 G/T polymorphism and obesity.

Author	Year	Country	Source of controls	Gender (male, %)a	Ageb	Definitionc	GG		GT		TT		G		HWE d
							case	control	case	control	case	control	case	control
Ai ZH [25]	2006	China	PB	129 (62.93)	48.80±10.10	BMI≥25.0	11	7	48	32	57	50	70	44	0.559
Bu RF [26]	2007	China	PB	53 (62.35)	56.53±9.00	BMI≥25.0	2	2	25	10	18	28	29	14	0.396
Chen XY [18]	2012	China	PB	158 (33.55)	45.40±9.01	BMI≥25.0	20	13	132	85	96	125	172	111	0.771
Jin LZ [21]	2004	China	PB	144 (46.75)	53.60±10.69	BMI≥25.0	9	1	41	75	72	107	59	83	0.026
Shi XH [27]	2007	China	PB	162 (56.64)	45.17±5.81	BMI≥28.0	0	11	10	62	13	76	10	84	0.734
Su QJ [28]	2005	China	PB	NA	47.65±11.02	BMI≥25.0	2	3	11	33	17	29	15	39	0.092
Wang CJ [19]	2005	China	HB	100 (46.51)	51.48±8.49	BMI≥25.0	10	5	52	40	41	67	72	50	0.752
Wang SF [29]	2005	China	PB	65 (55.08)	33.56±8.88	BMI≥25.0	6	10	30	32	16	24	42	52	0.901
Wang SJ [22]	2008	China	PB	171 (43.85)	51.00±1.00	BMI≥25.0	15	10	79	70	114	102	108	90	0.654
Wei YL [30]	2007	China	PB	59 (58.42)	53.00±11.00	BMI≥25.0	0	0	10	33	15	43	10	33	0.016
Yan WL [31]	2006	China	PB	273 (55.26)	48.50±9.52	BMI≥28.0	95	72	186	203	201	222	376	347	0.024
Arnaiz-Villena A [32]	2013	Spain	PB	139 (43.17)	NA	M: WC≥88.5	14	6	38	27	124	111	66	39	0.017
						F: WC≥82.5
Beckers S [17]	2009	Belgium	PB+HB	0 (0.00)	37.28±1.00	BMI≥30.0	5	4	38	24	180	59	48	32	0.450
Bouatia-Naji N [33]	2006	France	PB	NA	NA	BMI≥40.0	14	15	148	144	468	536	179	174	0.155
Boumaiza I [34]	2011	Tunisia	HB	92 (27.96)	45.76±12.10	BMI≥30.0	8	8	48	56	104	105	64	72	0.067
Guzman-Ornelas MO [35]	2012	Mexico	PB	43 (29.66)	37.78±11.16	BMI >30.0	3	6	17	28	37	54	23	40	0.377
Sharma A [36]	2009	America	PB	NA	NA	BMI≥30.0	0	0	5	11	18	49	5	11	0.434
Ukkola O [20]	2003	Sweden	HB	0 (0.00)	45.95±5.50	M: BMI≥34.0F: BMI≥38.0	0	2	13	12	83	82	13	16	0.075

Note: PB: population-based; HB: hospital-based; BMI: body mass index; WC: waist circumference; NA: not available; HWE: Hardy-Weinberg equilibrium; M: male; F: female;

^anumber and percentage;

^bmean ± SD;

^cdefinition of obesity (BMI: kg/m²; WC: cm);

^dHEW in controls.