Moon H, et al. - Researchers designed a cross-sectional study using a nationally representative sample of Medicare beneficiaries to determine how the prevalence and risk factors of dementia differ by race/ethnicity and immigrant status. Participants included non-Hispanic white (NHW), non-Hispanic black (NHB), Hispanic, and other Medicare beneficiaries from Round 1 of the National Health and Aging Trends Study (N=7,609). Observations suggested important effects of immigrant status on dementia prevalence. These effects were noted to differ substantially across racial/ethnic groups. A higher prevalence of dementia was noted among US-born NHB vs US-born white, Hispanic, and other individuals. Dementia was more prevalent among NHW, Hispanic, and other immigrants vs their US-born counterparts. However, compared with NHB immigrants, NHB US-born individuals had a higher prevalence of dementia.