Stratified analyses of the <i>PLCE1</i> rs2274223 A>G polymorphism on cancer risk.

a<p>Contains two HNC and one CRC studies.</p>b<p>Number of comparisons. One of these studies consisted of GC and EC.</p>c<p>Random-effects model was used when <i>P</i> value for heterogeneity test <0.05; otherwise, fixed-effects model was used.</p><p><i>P</i> (Q): <i>P</i>-value of Q-test for heterogeneity test.</p><p><i>P</i> (Z): <i>P</i>-value of Z-test for overall OR. <i>P</i><0.0125 defined as the significance threshold after Bonferroni correction.