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Rates of ischemic stroke, with 95% CIs, in patients with prevalent atrial fibrillation based on race: (A) white, (B) black, (C) other. CI values of the percentages using warfarin are not displayed in the figures to maintain readability; however, the SEEs ranged from 0.18% to 0.22% for white patients, 0.87% to 1.01% for black patients, and 1.02% to 1.52% for patients of other race.
