Inequalities in dementia incidence between six racial and ethnic groups over 14 years

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  • Elizabeth Rose Mayeda
    Department of Epidemiology and Biostatistics University of California, San Francisco San Francisco CA USA
  • M.Maria Glymour
    Department of Epidemiology and Biostatistics University of California, San Francisco San Francisco CA USA
  • Charles P. Quesenberry
    Kaiser Permanente Division of Research Oakland CA USA
  • Rachel A. Whitmer
    Department of Epidemiology and Biostatistics University of California, San Francisco San Francisco CA USA

説明

<jats:title>Abstract</jats:title><jats:sec><jats:title>Introduction</jats:title><jats:p>Reducing racial/ethnic disparities is a primary objective of the National Alzheimer's Plan (NAPA), yet direct comparisons within large samples representing diversity of the United States are lacking.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>Dementia incidence from January 1, 2000 to December 31, 2013 and a 25‐year cumulative risk in 274,283 health care members aged 64+ (n = 18,778 African‐American, n = 4543 American Indian/Alaska Native [AIAN], n = 21,000 Latino, n = 440 Pacific Islander, n = 206,490 white, n = 23,032 Asian‐Americans). Cox proportional hazard models were adjusted for age, sex, medical utilization, and comorbidities.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Dementia incidence (n = 59,555) was highest for African‐Americans (26.6/1000 person‐years) and AIANs (22.2/1000 person‐years); intermediate for Latinos (19.6/1000 person‐years), Pacific Islanders (19.6/1000 person‐years), and whites (19.3/1000 person‐years) and lowest among Asian‐Americans (15.2/1000 person‐years). Risk was 65% greater for African‐Americans (hazard ratio = 1.65; 95% confidence interval = 1.58–1.72) versus Asian‐Americans. Cumulative 25‐year risk at age 65 was as follows: 38% African‐Americans, 35% AIANs, 32% Latino, 25% Pacific Islanders, 30% white, and 28% Asian‐Americans.</jats:p></jats:sec><jats:sec><jats:title>Discussion</jats:title><jats:p>Dementia rates varied over 60% between groups, providing a comprehensive benchmark for the NAPA goal of reducing disparities.</jats:p></jats:sec>

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