The VASOGRADE-Yellow had a tendency for increased risk for DCI ( odds ratio [ OR ] , 1.31 ; 95 % CI , 0.77-2 .23 ) when compared with VASOGRADE-Green ; those with VASOGRADE-Red had a 3-fold higher risk of DCI ( OR , 3.19 ; 95 % CI , 2.07-4 .50 ) .