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Results From the Copiah County Study

Armin F. Haerer, MD; Dallas W. Anderson, PhD; Bruce S. Schoenberg, MD, DrPH

Arch Neurol. 1982;39(12):750-751.

Abstract
• This investigation determined the prevalence of essential tremor in a US population. The findings were derived from a large-scale morbidity survey conducted in a rural, biracial Mississippi county (Copiah County). Both the household and the institutionalized populations of the county were included. Results were limited to persons 40 years old or older. Prevalence ratios were higher for women than for men and were higher for whites than for blacks. Age-specific prevalence ratios generally increased with age. The overall prevalence ratio was 414.6 per 100,000 inhabitants.

Author Affiliations
From the Department of Neurology, University of Mississippi Medical Center, Jackson (Dr Haerer); and the Office of Biometry and Field Studies (Dr Anderson) and the Neuroepidemiology Section (Dr Schoenberg), National Institute of Neurological and Communicative Disorders and Stroke, National Institutes of Health, Bethesda, Md.

Footnotes
Accepted for publication March 16, 1982.

Read in part at the 1981 meeting of the American Neurological Association, San Francisco, Sept 15, 1981.

Reprint requests to Department of Neurology, University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216 (Dr Haerer).

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