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Figure 2 Mean PRI on Days 1 and 7 in the Two Groups

On Day 1, mean platelet reactivity index (PRI) was 83.2% and 83.9%, respectively, in the placebo and omeprazole groups (nonsignificant). On Day 7, mean PRI was 39.8% and 51.4%, respectively, in the placebo and omeprazole groups (p < 0.0001). VASP = vasodilator-stimulated phosphoprotein.