Goodman, R.A. et al.Alzheimer’s & Dementia. Published online: 10 May 2016
- Rapid growth of the older adult population requires greater epidemiologic characterization of dementia.
- We developed national prevalence estimates of diagnosed dementia and subtypes in the highest risk U.S. population by analyzing Centers for Medicare & Medicaid administrative enrollment and claims data for 100% of Medicare fee-for-service beneficiaries enrolled during 2011–2013 and age ≥68 years as of December 31, 2013 (n = 21.6 million).
- Over 3.1 million (14.4%) beneficiaries had a claim for a service and/or treatment for any dementia subtype.
- Dementia not otherwise specified was the most common diagnosis (present in 92.9%); the most common subtype was Alzheimer’s (43.5%), followed by vascular (14.5%), Lewy body (5.4%), frontotemporal (1.0%), and alcohol induced (0.7%).
- This study, the first to document concurrent prevalence of primary dementia subtypes among this U.S. population, provides findings that can assist in prioritizing dementia research, clinical services, and caregiving resources.
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