RESULTS	An angiographic substudy enrolling 571 patients ( EES , 285 patients and SES , 286 patients ) demonstrated noninferiority of EES relative to SES regarding the primary angiographic end point of in-segment late loss ( 0.060.37 mm versus 0.020.46 mm , P ( noninferiority ) < 0.0001 , and P ( superiority ) = 0.24 ) at 27863 days after index stent implantation .\