Rajan KB, et al. - The current study was conducted to evaluate the trends in prevalence and incidence of Alzheimer's disease (AD) dementia by analyzing data of 2,794 participants with a clinical diagnosis for AD dementia. Researchers found that the overall standardized prevalence of AD dementia was 14.5% and incidence was 2.3% according to 2010 US census data. Both prevalence and incidence of AD dementia displayed substantial variation between 1994 and 2012, but no secular trend was seen. Findings revealed that the prevalence and incidence among African Americans was roughly double than that among European Americans.