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Prevalence and Incidence of AD Dementia Examined

Alzheimers Dement; ePub 2018 Sep 6; Rajan, et al

The prevalence and incidence of Alzheimer disease (AD) dementia showed substantial variation between 1994 and 2012, but no secular trend, according to a recent study that estimated the prevalence and incidence of AD dementia in a population study based on 2010 US census data. A sample of 2,794 participants with a clinical diagnosis for AD dementia were included. Researchers found:

  • The 2010 census standardized prevalence of AD dementia was 14.5%, and annual incidence was 2.3%.
  • Both prevalence and incidence showed substantial variation over time, but no secular trends.
  • The prevalence of AD dementia did not change significantly from 14.6% in 1994–1997 to 14.7% in 2010–2012.
  • The annual incidence of AD dementia was 2.8% in 1998–2000 and 2.2% in 2004–2006 and remained steady in 2010–2012.
  • The prevalence and incidence among African Americans were approximately twice than those among European Americans.

Citation:

Rajan KB, Weuve J, Barnes LL, Wilson RS, Evans DA. Prevalence and incidence of clinically diagnosed Alzheimer's disease dementia from 1994 to 2012 in a population study. [Published online ahead of print September 6, 2018]. Alzheimers Dement. doi:10.1016/j.jalz.2018.07.216.

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