Incidence of dementia after age 90 in a multiracial cohort

Autor: Charles P. Quesenberry, Rachel A. Whitmer, Elizabeth Rose Mayeda, Maria M. Corrada, M. Maria Glymour, Paola Gilsanz, Catherine Lee, Claudia H. Kawas
Rok vydání: 2019
Předmět:
Zdroj: Alzheimer's & Dementia. 15:497-505
ISSN: 1552-5279
1552-5260
Popis: Introduction Little is known about dementia incidence in diverse populations of oldest-old, the age group with highest dementia incidence. Methods Incident dementia diagnoses from 1/1/2010 to 9/30/2015 were abstracted from medical records for 2350 members of an integrated health care system in California (n = 1702 whites, n = 375 blacks, n = 105 Latinos, n = 168 Asians) aged ≥90 in 2010. We estimated race/ethnicity-specific age-adjusted dementia incidence rates and implemented Cox proportional hazards models and Fine and Gray competing risk of death models adjusted for demographics and comorbidities in midlife and late-life. Results Dementia incidence rates (n = 771 cases) were lowest among Asians (89.9/1000 person-years), followed by whites (96.9/1000 person-years), Latinos (105.8/1000 person-years), and blacks (121.5/1000 person-years). Cox regression and competing risk models estimated 28% and 36% higher dementia risk for blacks versus whites adjusting for demographics and comorbidities. Discussion Patterns of racial/ethnic disparities in dementia seen in younger older adults continue after the age of 90 years, though smaller in magnitude.
Databáze: OpenAIRE