During a median follow-up of @ years ( IQR @-@ ) , seven ( @ % , @ % CI @-@ ) patients in the stenting group and four ( @ % , @-@ ) in the medical treatment group had a stroke in the territory of the symptomatic vertebral artery ; @ ( @ % ) patients in the stenting group and ten ( @ % ) in the medical treatment group had vascular death , myocardial infarction , or any stroke .