In the ZES group , 140 patients ( 17.5 % ) reached the primary endpoint , compared with 178 patients ( 22.1 % ) in the BMS group ( hazard ratio : 0.76 ; 95 % confidence interval : 0.61 to 0.95 ; p = 0.011 ) as a result of lower MI ( 2.9 % vs. 8.1 % ; p < 0.001 ) and TVR rates ( 5.9 % vs. 10.7 % ; p = 0.001 ) in the ZES group .