Fig. 4 Freedom from major adverse events at 1 year. In the intention-to-treat analysis (A), the rate of event-free survival at 1 year was 87.9% among patients randomly assigned to carotid stenting, as compared with 79.9% among those randomly assigned to endarterectomy (P = 0.053). In the actual-treatment analysis (B), the rate of event-free survival at 1 year was 88.0% among patients who received a stent, as compared with 79.9% among those who underwent endarterectomy (P = 0.048). I bars represent 1.5 times the SE. (From: Yadav JS, Wholey MH, Kuntz RE, Fayad P, Katzen BT, Mishkel GJ, et al. Protected carotid-artery stenting versus endarterectomy in high-risk patients. N Engl J Med 2004;351:1493–501. Copyright © 2004 Massachusetts Medical Society. All rights reserved.)