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| Research article summary (published 30 Dec 2002): |
Tracking cognitive functioning over time: ten-year longitudinal data from a community-based study.
Full Abstract
Over 10 years, a community-based sample age 65> or = years, with a starting cohort size of 1,206, was assessed biennially with the Mini-Mental State Exam; the Consortium to Establish a Registry for Alzheimer's Disease battery; Immediate and Delayed Recall of a Story; Verbal Fluency for P and S, Fruits and Animals; Clock Drawing; Temporal Orientation; and Trail Making tests. We report distributions of scores over time, at each wave, in (a) all individuals who were assessed at that wave, whether or not they participated in all waves, and (b) the Survivor subgroup of 425 participants who completed all tests at all 5 waves. Scores and factor structures remained remarkably stable over the study period. The most marked decline over time was seen on the Trail Making tests. As the survivors are de facto a largely healthy and motivated group, their data can be considered population-based healthy norms and may serve as a reference for other studies conducting repeated evaluations using the same tests.
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Author information
Author/s: Ratcliff, Graham (G); Dodge, Hiroko (H); Birzescu, Maria (M); Ganguli, Mary (M);
Affiliation: HealthSouth Harmarville Rehabilitation Hospital, Pittsburgh, Pennsylvania 15238, USA.
Grants: AG06782 (Agency:United States NIA) ; AG07562 (Agency:United States NIA)
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Applied neuropsychology (Appl Neuropsychol), published in United States. (Language: eng)
Reference: 2003-; vol 10 (issue 2) : pp 76-88
Dates: Created 2003/06/05; Completed 2003/09/05; Revised 2007/11/14;
PMID: 12788682, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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