there was a 44 percent reduction in the risk of myocardial infarction ( relative risk , 0.56 ; 95 percent confidence interval , 0.45 to 0.70 ; p less than 0.00001 ) in the aspirin group ( 254.8 per 100,000 per year as compared with 439.7 in the placebo group ) .
C0027051
myocardial infarction
C0004057
aspirin