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Dementia and Cognitive Impairment in the Oldest Old: A Comparison of Two Rating Methods

Published online by Cambridge University Press:  07 January 2005

Boo Johansson  and
Steven H. Zarit
Boo Johansson
Affiliation:
Institute for Gerontology, Jönköping, Sweden
Steven H. Zarit
Affiliation:
Department of Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania, U.S.A.
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Abstract

Rates of cognitive impairment in a representative population of the oldest old (aged 84 to 90) were examined using two indicators: The Global Deterioration Scale (GDS), and a Cognitive Rating (CR) derived from performance on five neuropsychological tests. Prevalence was estimated at 25.3%, using the GDS, and 30% with the CR. The overall degree of congruence between the measures was high, with most disagreements involving mildly impaired cases. The results indicate a high degree of convergence of clinical and neuropsychological indicators. The findings also confirm high rates of impairment among the oldest old.

Type
Research and Reviews
Information
International Psychogeriatrics , Volume 3 , Issue 1 , March 1991 , pp. 29 - 38
Copyright
© 1991 Springer Publishing Company

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