TY - JOUR
T1 - Cognitive performance in a high-functioning community-dwelling elderly population
AU - Inouye, S. K.
AU - Albert, M. S.
AU - Mohs, R.
AU - Sun, K.
AU - Berkman, L. F.
PY - 1993
Y1 - 1993
N2 - Background. The purpose of this study was to examine the role of demographic factors as predictors of cognitive performance in a high- functioning, community-dwelling elderly population. Methods. The study cohort consisted of 1,192 community-dwelling subjects, who were selected to represent the highest third of an elderly population with respect to physical and cognitive functioning. A neuropsychological battery, including 5 cognitive performance subtests (confrontation naming, delayed recognition span, similarities, figure-copying, and incidental delayed recall) was administered to the subjects in their homes. Results. A summary measure of the 5 neuropsychological subtest scores, the total cognitive score, arrayed the study group across a broad range of difficulty, creating a near-normal distribution. Education, income, and race had statistically significant associations with the total score and the individual subtests. The effect of education was the most striking finding, explaining 30% of the variance in the total score. Education was most strongly related to the abstraction (partial R2 = .11) subtest, and least related to the memory subtests, delayed recognition (R2 = .02) and delayed recall (R2 = .01). Conclusions. Demographic factors are important predictors of cognitive performance in this high-functioning cohort. Education had the strongest influence on overall cognitive performance, and particularly notable associations with subtests that depended upon the use of previously learned materials. Longitudinal follow-up, now underway, will help to determine whether high levels of education help to maintain cognitive performance with age.
AB - Background. The purpose of this study was to examine the role of demographic factors as predictors of cognitive performance in a high- functioning, community-dwelling elderly population. Methods. The study cohort consisted of 1,192 community-dwelling subjects, who were selected to represent the highest third of an elderly population with respect to physical and cognitive functioning. A neuropsychological battery, including 5 cognitive performance subtests (confrontation naming, delayed recognition span, similarities, figure-copying, and incidental delayed recall) was administered to the subjects in their homes. Results. A summary measure of the 5 neuropsychological subtest scores, the total cognitive score, arrayed the study group across a broad range of difficulty, creating a near-normal distribution. Education, income, and race had statistically significant associations with the total score and the individual subtests. The effect of education was the most striking finding, explaining 30% of the variance in the total score. Education was most strongly related to the abstraction (partial R2 = .11) subtest, and least related to the memory subtests, delayed recognition (R2 = .02) and delayed recall (R2 = .01). Conclusions. Demographic factors are important predictors of cognitive performance in this high-functioning cohort. Education had the strongest influence on overall cognitive performance, and particularly notable associations with subtests that depended upon the use of previously learned materials. Longitudinal follow-up, now underway, will help to determine whether high levels of education help to maintain cognitive performance with age.
UR - http://www.scopus.com/inward/record.url?scp=0027212776&partnerID=8YFLogxK
U2 - 10.1093/geronj/48.4.M146
DO - 10.1093/geronj/48.4.M146
M3 - Article
C2 - 8315227
AN - SCOPUS:0027212776
SN - 0022-1422
VL - 48
SP - M146-M151
JO - Journals of Gerontology
JF - Journals of Gerontology
IS - 4
ER -