Kathleen Hall|Sujuan Gao|Olusegun Baiyewu|Kathleen A. Lane|Oye Gureje|Jianzhao Shen|Adesola Ogunniyi|Jill R. Murrell|Frederick W. Unverzagt|Jeanne Dickens|Valerie Smith?Gamble|Hugh C. Hendrie
Prevalence rates for dementia and Alzheimer's disease in African Americans: 1992 versus 2001
Indiana University – Purdue University Indianapolis|Indiana University – Purdue University Indianapolis|University of Ibadan|Indiana University – Purdue University Indianapolis|University of Ibadan|Indiana University – Purdue University Indianapolis|Pharmaceutical Product Development (United States)|University of Ibadan|Indiana University – Purdue University Indianapolis|Indiana University – Purdue University Indianapolis|Indiana University – Purdue University Indianapolis|Indiana University – Purdue University Indianapolis|Richard L. Roudebush VA Medical Center|Indiana University – Purdue University Indianapolis|Regenstrief Institute|Indiana University
study compares agespecific overall prevalence rates dementia alzheimers disease ad two nonoverlapping populationbased cohorts elderly african americans indianapolis 2001 1992we used twostage design first stage involves community screening interview dementia csid csid scores grouped good intermediate poor performance selection clinical assessment diagnoses performed using standard criteria consensus diagnosis conference clinicians blind performance groups 1992 interviewers visited randomly sampled addresses enroll selfidentified african americans aged 65 years 2582 eligible 2212 enrolled 96 refused 47 sick 2001 medicare rolls used african americans aged 70 years 4260 eligible 1892 44 enrolled 1999 47 refused remainder participate reasonsthe overall ageadjusted prevalence rate dementia age 70 years 2001 745 95 confidence interval ci 4271064 1992 cohort prevalence rate 675 95 ci 577774 overall ageadjusted prevalence rate age 70 years ad 2001 cohort 677 95 ci 365990 1992 cohort 547 95 ci 451642 rates dementia ad significantly different two cohorts dementia p 3534 ad p 2649we found differences prevalence rates dementia ad 1992 2001 despite significant differences medical history medical treatment within populationbased cohorts african american elderly