Table II. Distributions of matrix metalloproteinase-7 (MMP-7) genotypic frequencies among the RCC cases and controls.

OR: Odds ratio; CI: confidence interval. aData have been adjusted with confounding factors including age, gender, smoking, drinking status, hypertension, diabetes and family history of cancer. bBased on Chisquare test without Yates’ correction or Fisher’s exact test; *p<0.05.