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Dementia Prevalence in the United States in 2000 and 2012: Estimates Based on a Nationally Representative Study

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  • Péter HudomietPhD
  • Michael D HurdPhD
  • Susann RohwedderPhD

Abstract

ObjectivesAge- and sex-specific rates of dementia are estimated in the U.S. population aged 65 or older in 2000 and 2012 using a large nationally representative dataset, the Health and Retirement Study (HRS), and accounting for mortality selection and specificities of the interview protocol.MethodA latent cognitive ability model is estimated by maximum simulated likelihood. Prevalence of dementia is identified using HRS cognition measures and the Aging, Demographics and Memory Study (ADAMS), a subset of the HRS (n = 856) with clinical assessment for dementia. Different cognitive measures are collected in self and proxy interviews. From 2006 onward, the HRS collected fewer interviews by proxy. Selection into proxy interviews is modeled as well as survival into the ADAMS sample from the previous HRS interview.ResultsThe prevalence of dementia decreased from 12.0% (SE = 0.48%) in 2000 to 10.5% (SE = 0.49%) in 2012 in the 65+ population, a statistically significant decline of 12.6% (p < .01). The percentage change in prevalence was larger among males (16.6% vs 9.5%), and younger individuals.DiscussionThe prevalence of dementia among those 65 or older decreased between 2000 and 2012, although less rapidly than reported in other studies. The difference is primarily due to our modeling selection into proxy interviews.

Suggested Citation

  • Péter HudomietPhD & Michael D HurdPhD & Susann RohwedderPhD, 2018. "Dementia Prevalence in the United States in 2000 and 2012: Estimates Based on a Nationally Representative Study," The Journals of Gerontology: Series B, The Gerontological Society of America, vol. 73(suppl_1), pages 10-19.
    • Handle: RePEc:oup:geronb:v:73:y:2018:i:suppl_1:p:s10-s19.
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    File URL: http://hdl.handle.net/10.1093/geronb/gbx169
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    Cited by:

    1. Vikesh Amin & Jere R. Behrman & Jason M. Fletcher & Carlos A. Flores & Alfonso Flores-Lagunes & Hans-Peter Kohler, 2022. "Does Schooling Improve Cognitive Abilities at Older Ages: Causal Evidence from Nonparametric Bounds," PIER Working Paper Archive 22-016, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania.
    2. Hudomiet, Péter & Hurd, Michael D. & Rohwedder, Susann, 2019. "The relationship between lifetime out-of-pocket medical expenditures, dementia, and socioeconomic status in the U.S," The Journal of the Economics of Ageing, Elsevier, vol. 14(C).
    3. Pamela Giustinelli & Charles F Manski & Francesca Molinari, 2022. "Precise or Imprecise Probabilities? Evidence from Survey Response Related to Late-Onset Dementia," Journal of the European Economic Association, European Economic Association, vol. 20(1), pages 187-221.

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