(HealthDay News) – Racial and ethnic differences influence the risk of dementia in older individuals with type 2 diabetes, according to research published online Nov. 22 in Diabetes Care.

Elizabeth R. Mayeda, PhD, MPH, of the University of California in San Francisco, and colleagues analyzed data from the Kaiser Permanente Northern California Diabetes Registry for 22,171 diabetes patients, ≥60 years of age, without preexisting dementia, to evaluate racial and ethnic differences in risk of dementia.

The researchers found that dementia was diagnosed in 17.1% of diabetes patients. Age-adjusted dementia incidence densities ranged from 34 and 27 per 1,000 person-years in Native-Americans and African-Americans, respectively, to 19 per 1,000 person-years in Asian-Americans. In the fully-adjusted model, relative to Asian-Americans, the risk of dementia in diabetes patients (expressed as hazard ratios) was 1.64 for Native-Americans, 1.44 for African-Americans, 1.3 for non-Hispanic whites, and 1.19 for Latinos.

“Among older type 2 diabetes patients, 10-year dementia incidence was highest among Native-Americans and African-Americans, lowest among Asians, and intermediate for non-Hispanic whites and Latinos,” the authors write.

Several authors disclosed financial ties to Kaiser Permanente, which contributed funding to the study.

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