No difference was observed between the groups treated with the higher dose or the lower dose of simvastatin in the incidence of delayed ischemic deficits ( 27 % versus 24 % ; odds ratio , 1.2 ; 95 % confidence interval , 0.7-2 .0 ; P = 0.586 ) or in the rate of favorable outcomes ( modified Rankin Scale score , 0-2 ) at 3 months ( 73 % versus 72 % ; odds ratio , 1.1 ; 95 % confidence interval , 0.6-1 .9 ; P = 0.770 ) .