Journal article
Prevalence of Dementia in the United States: The Aging, Demographics, and Memory Study
Neuroepidemiology, Vol.29(1-2), pp.125-132
10/29/2007
DOI: 10.1159/000109998
PMCID: PMC2705925
PMID: 17975326
Abstract
Aim: To estimate the prevalence of Alzheimer's disease (AD) and other dementias in the USA using a nationally representative sample. Methods: The Aging, Demographics, and Memory Study sample was composed of 856 individuals aged 71 years and older from the nationally representative Health and Retirement Study (HRS) who were evaluated for dementia using a comprehensive in-home assessment. An expert consensus panel used this information to assign a diagnosis of normal cognition, cognitive impairment but not demented, or dementia (and dementia subtype). Using sampling weights derived from the HRS, we estimated the national prevalence of dementia, AD and vascular dementia by age and gender. Results: The prevalence of dementia among individuals aged 71 and older was 13.9%, comprising about 3.4 million individuals in the USA in 2002. The corresponding values for AD were 9.7% and 2.4 million individuals. Dementia prevalence increased with age, from 5.0% of those aged 71-79 years to 37.4% of those aged 90 and older. Conclusions: Dementia prevalence estimates from this first nationally representative population-based study of dementia in the USA to include subjects from all regions of the country can provide essential information for effective planning for the impending healthcare needs of the large and increasing number of individuals at risk for dementia as our population ages. Copyright © 2007 S. Karger AG.
Details
- Title: Subtitle
- Prevalence of Dementia in the United States: The Aging, Demographics, and Memory Study
- Creators
- B.L. Plassman - Duke UniversityK.M. Langa - University of IowaG.G. Fisher - University of MichiganS.G. Heeringa - University of MichiganD.R. Weir - University of MichiganM.B. Ofstedal - University of MichiganJ.R. Burke - Department of Psychiatry and Behavioral Sciences, Durham, N.C. Department of Medicine (Neurology), Duke University Medical Center, Durham, N.C. Division of General Medicine, Department of Medicine, Ann Arbor, Mich., USA Institute for Social Research, University of Michigan, Ann Arbor, Mich., USA Department of Veterans Affairs Center for Practice Management and Outcomes Research, Ann Arbor, Mich., USA RAND, Santa Monica, Calif., USA Colleges of Public Health and Medicine, University of Iowa, Iowa City, Iowa, USAM.D. Hurd - RAND CorporationG.G. Potter - Duke UniversityW.L. Rodgers - University of MichiganD.C. Steffens - Duke UniversityR.J. Willis - University of MichiganR.B. Wallace - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Neuroepidemiology, Vol.29(1-2), pp.125-132
- DOI
- 10.1159/000109998
- PMID
- 17975326
- PMCID
- PMC2705925
- NLM abbreviation
- Neuroepidemiology
- ISSN
- 0251-5350
- eISSN
- 1423-0208
- Publisher
- S. Karger AG
- Language
- English
- Date published
- 10/29/2007
- Academic Unit
- Epidemiology; Injury Prevention Research Center; Internal Medicine
- Record Identifier
- 9984364426902771
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