Among statin users , IVR + participants had significantly lower low-density lipoprotein ( LDL ) levels at follow-up compared with UC ( = -1.5 ; 95 % CI , -2.7 to -0.2 mg/dL ) ; this effect was seen mainly in those with baseline LDL levels 100 mg/dL ( = -3.6 ; 95 % CI , -5.9 to -1.3 mg/dL ) .