Reliable comparisons of stroke incidence are important. To determine the impact of systematic assessment of patients referred with transient ischemic attack on the measured incidence and severity of stroke, we compared 2 population-based studies.Patients with first-ever stroke ascertained during 2006 through 2010 from the Dijon Stroke Registry and the Oxford Vascular (OXVASC) Study were studied. Both studies comply with the criteria for ideal incidence studies, but the OXVASC Study also systematically assessed all patients referred with transient ischemic attack. Stroke severity was measured by the National Institutes of Health Stroke Scale.Among 902 incident strokes in Dijon and 748 cases in the OXVASC Study, age and gender distribution were comparable, but severity was lower in the OXVASC Study (median National Institutes of Health Stroke Scale, 2 versus 6; P<0.001). Although overall incidence of ischemic stroke was higher in the OXVASC Study (157 versus 98 of 100 000/y; incidence rate ratio, 1.59; 95

作者：Yannick, Béjot；Ziyah, Mehta；Maurice, Giroud；Peter M, Rothwell

来源：Stroke 2013 年 44卷 7期