RT Journal Article SR Electronic T1 Prevalence of Parkinson's disease in the elderly JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 2143 OP 2146 DO 10.1212/WNL.45.12.2143 VO 45 IS 12 A1 de Rijk, M.C. A1 Breteler, M.M.B. A1 Graveland, G.A. A1 Ott, A. A1 Grobbee, D.E. A1 van der Meche, F.G.A. A1 Hofman, A. YR 1995 UL http://n.neurology.org/content/45/12/2143.abstract AB We assessed the prevalence of Parkinson's disease (PD) in a general elderly population in the Netherlands.The study formed part of the Rotterdam Study, a population-based door-to-door study, and included 6,969 persons 55 years of age or older living in a suburb of Rotterdam, the Netherlands. All participants were examined, and those who either had at least one possible cardinal sign of parkinsonism at the neurologic screening, reported that they had PD, or were taking antiparkinsonian drugs were invited for further evaluation. The prevalence of PD in this population was 1.4% (1.2% for men, 1.5% for women). Prevalence increased with age, and prevalence figures were 0.3% for those aged 55 to 64 years, 1.0% for those 65 to 74, 3.1% for those 75 to 84, and 4.3% for those 85 to 94. The corresponding age-specific figures for men were 0.4%, 1.2%, 2.7%, and 3.0%, and for women, 0.2%, 0.8%, 3.4%, and 4.8%. Among 95- to 99-year-old women the prevalence was 5.0%. Twelve percent of the subjects with PD were detected through the screening and had not been diagnosed previously. NEUROLOGY 1995;45: 2143-2146