The cognitive abilities screening instrument (CASI): data from a cohort of 2524 cognitively intact elderly
✍ Scribed by Susan M. McCurry; Steven D. Edland; Linda Teri; Walter A. Kukull; James D. Bowen; Wayne C. McCormick; Eric B. Larson
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 102 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0885-6230
No coin nor oath required. For personal study only.
✦ Synopsis
Objectives:
To describe the effects of age and education for the cognitive abilities screening instrument (casi), a 25-item test of cognitive function.
Design:
Cross-sectional descriptive study of the initial enrollment in a community-based prospective cohort study.
Participants:
A total of 2524 cognitively intact older adults over age 65 who were members of a major health maintenance organization, and who consented to participate in a longitudinal study.
Measurements:
Summary scores for the casi are given in the form of mean, median and percentile distributions specific for age and educational level.
Results:
Based upon maximum likelihood analyses, age and education were significant (p<0.0001) predictors of total casi score. increased age and lower education were associated with a lower casi score, as well as an increased spread in score distribution. gender was also significantly related (p<0.01) to total casi, with women having a slightly higher distribution of scores. mean total scores ranged from casi=82.2 (sd=9.0) in subjects aged 90-95 who had less than a high school degree to casi=94.8 (sd=3. 8) in subjects aged 65-69 with at least a high school education.
Conclusions:
Like most cognitive screening instruments, performance on the casi in non-demented persons is influenced by age and education. the reference values for 5-year age categories described in this article should be useful for clinicians and research investigators when using the casi as a measure of cognitive function.