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Time trends in statin use, current smoking prevalence, and duration of follow-up, and ipsilateral stroke rates stratified by confounding factor
Data are pooled annual ipsilateral stroke rates and 95% CIs. Data are from all non-selective cohort studies (n=30) reporting stroke risk for patients with 50–69% or 70–99% stenosis. Time trends for medically treated patients with asymptomatic carotid stenosis are shown on the left.
