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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: J Rheumatol. 2014 Dec 1;42(2):292–299. doi: 10.3899/jrheum.131430

Table 1A.

Characteristics of the individual studies included in the metaanalysis.

Study Country Sample Sizes Genotypes for Cases Genotypes for Controls A Allele Frequency (%) HWE p
Case Control Total GG GA AA GG GA AA Case Control Control
Jagiello, et al (2005) Germany 199 399 598 142 52 5 323 72 4 15.58 10.03 0.9956
Carr, et al (2009) UK 626 7412 8038 471 146 9 6044 1298 70 13.10 9.70 0.9732
Martorana, et al (2012) Italy 344 945 1289 302 39 3 859 82 4 6.54 4.76 0.1828
Cao, et al (2012) USA 230 1178 1408 179 48 3 984 186 8 11.74 8.57 0.8063