The prevalence of Parkinson's disease increase dramatically with age. For every 100,000 Americans, 6,317 people age 80 and over have the disease, compared with 2,785 aged 70-80 and 704 aged 60-70.
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Strickland, Daniel, and John Bertoni. "Parkinson’s Prevalence Estimated by a State Registry". Movement Disorders. Vol. 19, No. 3, pp. 318-23. [ Permalink ] |