In contrast , during 12 months of additional observational follow-up , 11 participants ( 14 % ) in the treatment group experienced the composite outcome of deathorhospitalization for myocardial infarction/unstable angina compared with 3 participants ( 4 % ) in the usual caregroup ( hazard ratio , 2.91 ; 95 % confidence interval , 0.80-10 .56 ; P = .10 ) .