Table III. Allelic frequencies for matrix metalloproteinase-7 (MMP-7) polymorphisms in the RCC and control groups.

OR: Odds ratio; CI: confidence interval. aData that have been adjusted with confounding factors include 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