Results from meta-analysis of IL-18 gene promoter haplotypes.

<p>GC: Gynecological cancer; NC: Nasopharyngeal carcinoma; GUC: Genitourinary system cancer; GIC: Gastrointestinal cancer; BC: Breast cancer; N: number of studies included; OR: odds ratio; P_h: p value for heterogeneity;</p>*<p>OR with statistical significance;</p>a<p>studies with more than 500 participants;</p>b<p>studies with less than 500 participants;