Forest plot of cancer metastasis risk associated with <i>MMP7 (−181) A>G</i>.

<p>A fixed-effects model was used. A indicates the result under the dominant model (<i>GG+AG</i> vs. <i>AA</i>). B indicates the result under the recessive model (<i>GG</i> vs. <i>AG+AA</i>). The <i>squares</i> and <i>horizontal line</i> represent the study-specific OR and 95% CI. The <i>diamond</i> represents the pooled results of OR and 95% CI.