With regard to stent-treated lesions , the percentage of struts not covered by neointima ( 37 % vs. 910 % , P < 0.001 ) and the frequency of stent-treated lesions with any uncovered struts ( n = 28 , 51 % vs. n = 42 , 82 % ; P < 0.001 ) were significantly lower in EES compared with BES .