Primary Article

Survey of Major Neurologic Disorders in a Biracial United States Population: The Copiah County Study

Authors: ARMIN F. HAERER MD, DALLAS W. ANDERSON PhD, BRUCE S. SCHOENBERG MD, DrPH

Abstract

ABSTRACT: To determine the prevalence of frequently occurring neurologic disorders in a biracial population, a survey of households and chronic care institutions was carried out for all residents of Copiah County, Mississippi. Along with a complete census, interviews were held using extensive questions about diagnoses, signs, and symptoms of neurologic disorders. More than 97% of eligible households participated, comprising 23,842 persons (49% black, 50% white, 1% other). Persons with responses suggesting one or more of these disorders were examined by a neurologist who used defined diagnostic criteria. Age-adjusted prevalence ratios for cerebral palsy, epilepsy, stroke, and severe dementia were somewhat higher in blacks than in whites, while the age-adjusted prevalence ratio for essential tremor was slightly higher in whites. For Parkinsons disease, there was no difference in age-adjusted prevalence ratios between the races.

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References