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

BMC Ophthalmology

Table 1 Characteristic of the studies included in the meta-analysis between rs699947 polymorphism in the VEGFA gene and diabetic retinopathy

Study	Country	Ethnicity	Sample size		Genotype frequency in cases			Genotype frequency in controls
			Cases	Controls	CC	AC	AA	CC	AC	AA	P _HWE
Yang,2003 [5]	UK	European	64	66	12	31	21	13	38	15	Yes
Awata,2005 [6]	Japan	East Asian	175	203	95	70	10	93	91	19	Yes
Buraczynska,2007 [7]	Poland	European	195	91	29	80	86	29	43	19	Yes
Abhary,2009 [8]	Australia	European	75	93	17	35	23	26	43	24	Yes
Abhary,2009 [8]	Australia	European	136	181	31	74	31	45	91	45	Yes
Nakamura,2009 [9]	Japan	East Asian	177	292	85	70	22	163	107	22	Yes
Chun,2010 [10]	Korea	East Asian	253	134	123	115	15	92	36	6	Yes
Yang,2011 [11]	China	East Asian	129	138	66	47	16	82	51	5	Yes

ISSN: 1471-2415