CVI was an independent predictor for reduced in-hospital MACE ( odds ratio , 0.49 ; 95 % confidence interval [ CI ] , 0.32-0 .75 ; P < 0.001 ) and survival at 1 year ( hazard ratio , 0.65 ; 95 % CI , 0.47-0 .91 ; P = 0.011 ) in the complete cohort ; and in 2821 patients in propensity-matched cohort ( in-hospital MACE : odds ratio , 0.49 ; 95 % CI , 0.32-0 .76 ; P = 0.002 ; and 1-year survival : hazard ratio , 0.64 ; 95 % CI , 0.45-0 .90 ; P = 0.010 ) .