Complication Rates and Center Enrollment Volume in the Carotid Revascularization Endarterectomy Versus Stenting Trial

Background and Purpose—Evidence indicates that center volume of cases affects outcomes for both carotid endarterectomy and stenting. We evaluated the effect of enrollment volume by site on complication rates in the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST). Methods—The primary composite end point was any stroke, myocardial infarction, or death within 30 days or ipsilateral stroke in follow-up. The 477 approved surgeons performed >12 procedures per year with complication rates 51 patients. Differences in periprocedural event rates for the primary composite end point and its components were compared using logistic regression ...