The MACE rate was lowest in EES ( 19.2 % ; 95 % confidence interval [ CI ] : 16.0 to 22.8 ) , highest in BMS ( 32.1 % ; 95 % CI : 28.1 to 36.3 ) , and intermediate in PES ( 26.2 % ; 95 % CI : 22.5 to 30.2 ) and ZES-S ( 27.8 % ; 95 % CI : 24.1 to 31.9 ) groups ( chi-square test = 18.9 , p = 0.00029 ) .