Genetic impact on the association between P-EPA+DHA and MI risk. Risk of MI (Odds Ratio, OR) with 95% confidence intervals (CI) for different genotypes in the P-EPA+DHA tertiles. The reference group is the most common homozygote in the lowest P-EPA+DHA tertile. ORs are adjusted for smoking and ApoB/ApoA1 ratio. The tertile boundaries are 0-5.39, 5.40-6.68, and 6.69-15%. a Number of individuals in each group.b Number of variant alleles.