Odds ratios (ORs) for associations between XPD Lys751Gln and XPD Asp312Asn polymorphisms and gastric cancer risk (based on a recessive genetic model) among different ethnicities. in order of increasing publication year, 2005–2011.

<p>Studies were entered into the meta-analysis sequentially by year of publication. The sizes of the squares indicate the relative weight of each study. Weights were derived from random-effects analysis. Bars, 95% confidence interval (CI). A) The XPD Lys751Gln polymorphism in association with gastric cancer; B) XPD Asp312Asn polymorphism in association with gastric cancer.