An analysis was made of 5,593 white and 911 black patients in the Joint Study of Extracranial Arterial Occlusion to determine the difference in clinical and arteriographic manifestations of ischemic stroke in the two groups. Black patients were found to have a higher frequency of occlusive disease of the intracranial arteries, whereas white patients were more likely to have lesions in the extracranial arteries. Blacks differed from whites in their neurologic manifestations, with a lower incidence of transient ischemic symptoms and a greater frequency of completed stroke. Severe hypertension was noted in 40% of the black patients and only 26% of the white patients. In general, the age of blacks on admission was younger than that of whites.
Heyman A, Fields WS, Keating RD. Joint Study of Extracranial Arterial OcclusionVI. Racial Differences in Hospitalized Patients With Ischemic Stroke. JAMA. 1972;222(3):285–289. doi:10.1001/jama.1972.03210030013003
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