Distribution of MMP-1 paired loci polymorphisms with increasing order of variant alleles and association with the gastric cancer risk.

OR, odds ratio; CI, confidence interval; Ref, reference.0 = no risk allele for both loci, 1 = one risk allele for any one loci, 2 = two risk allele for both the loci, 3 = one risk allele for any one locus and two risk allele for another locus, 4 = All risk allele for both the loci.Adjusted OR calculated for age, sex, addiction, by binary logistic regression model using SPSS v16.0 software.P value is for χ2-test showing the significance of difference in the distributions of the variant alleles between patients and controls.Values in bold indicate positive significance (PNo risk allele for both the gene was taken as reference to calculate OR.(*) OR not calculated because of very low frequency in both control and patient population.