This article reports on a prevalence study of dementia and Alzheimer's disease among two groups of subjects with the same ethnic background but widely differing environments.
The study was conducted among residents aged 65 years and older in two communities :
Yorubas (N=2,494) living in Ibadan,
Nigeria, and African Americans (N=2,212 in the community and N=106 in nursing homes) living in Indianapolis,
The study design consisted ofa screening stage followed by a clinical assessment stage for selected subjects on the basis of their performance on the screening tests.
The age-adjusted prevalence rates of dementia (2.29%) and Alzheimer's disease (1.41%) in the Ibadan sample were significantly lower than those in the Indianapolis sample, both in the community-dwelling subjects alone (4.82% and 3.69%, respectively) and in the combined nursing home and community samples (8.24% and 6.24%, respectively).
The prevalence rates of dementia and Alzheimer's disease increased consistently with advancing age in both study groups.
To the authors'knowledge, this is the first study, using the same research method at the two sites, to report significant differences in rates of dementia and Alzheimer's disease in two different communities with similar ethnic origins.
Mots-clés Pascal : Démence Alzheimer, Système nerveux pathologie, Système nerveux central pathologie, Encéphale pathologie, Maladie dégénérative, Prévalence, Epidémiologie, Etude transculturelle, Nigéria, Afrique, Etats Unis, Amérique du Nord, Amérique, Négroïde, Noir américain, Démence sénile, Vieillard, Homme
Mots-clés Pascal anglais : Alzheimer disease, Nervous system diseases, Central nervous system disease, Cerebral disorder, Degenerative disease, Prevalence, Epidemiology, Crosscultural study, Nigeria, Africa, United States, North America, America, Negroid, Black American, Senile dementia, Elderly, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0576317
Code Inist : 002B17G. Création : 01/03/1996.