Two polymorphisms (rs699947, rs2010963) in the VEGFA gene and diabetic retinopathy: an updated meta-analysis

BMC Ophthalmology

Table 2 Characteristic of the studies included in the meta-analysis between rs2010963 polymorphism in the VEGFA gene and diabetic retinopathy

Study	Country	Ethnicity	Sample size		Genotype frequency in cases			Genotype frequency in controls
			Cases	Controls	GG	GC	CC	GG	GC	CC	P _HWE
Awata,2005 [6]	Japan	East Asian	175	200	46	91	38	75	95	30	Yes
Buraczynska,2007 [7]	Poland	European	195	91	88	88	19	42	41	8	Yes
Errera,2007 [12]	Brazil	European	167	334	57	73	37	139	155	40	Yes
Petrovic,2008 [13]	Slovenia	European	206	143	79	103	24	61	67	15	Yes
Uthra,2008 [14]	India	South Asian	120	79	60	51	9	44	29	6	Yes
Nakamura,2009 [9]	Japan	East Asian	176	289	63	79	34	84	146	59	Yes
Kangas-Kontio,2009 [15]	Finland	European	126	96	74	42	10	52	39	5	Yes
Chun,2010 [10]	Korea	East Asian	253	134	85	125	43	43	69	22	Yes
Feghhi,2011 [16]	Iran	European	119	279	43	49	27	63	139	77	Yes
Yang,2011 [11]	China	East Asian	129	137	36	74	19	39	72	26	Yes

ISSN: 1471-2415