[RESULTS] At 1-year follow-up , definite stent thrombosis was more frequent after implantation of the zotarolimus-eluting stent ( 13/1162 [ 1.1 % ] ) than the sirolimus-eluting stent ( 4/1170 [ 0.3 % ] ; OR 3.34 , 95 % CI 1.08-10 .3 ; p = 0.036 ) , whereas the opposite finding was recorded for between 1 and 5 years ' follow-up ( zotarolimus-eluting stent 1/1162 [ 0.1 % ] vs sirolimus-eluting stent 21/1170 [ 1.8 % ] , OR 0.05 , 95 % CI 0.01-0 .36 ; p = 0.003 ) .