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Early detection of Alzheimer's disease with a total score of the German CERAD.

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  • 2010-08-05
Published in:
  • Journal of the International Neuropsychological Society : JINS. - 2010
Aged
Aged, 80 and over
Alzheimer Disease
Area Under Curve
Cognition Disorders
Cross-Sectional Studies
Disease Progression
Early Diagnosis
Female
Germany
Humans
Logistic Models
Longitudinal Studies
Male
Middle Aged
Neuropsychological Tests
Reproducibility of Results
English The goal of the present study was to evaluate the diagnostic discriminability of three different global scores for the German version of the Consortium to Establish a Registry on Alzheimer's Disease-Neuropsychological Assessment Battery (CERAD-NAB). The CERAD-NAB was administered to 1100 healthy control participants [NC; Mini-Mental State Examination (MMSE) mean = 28.9] and 352 patients with very mild Alzheimer's disease (AD; MMSE mean = 26.1) at baseline and subsets of participants at follow-up an average of 2.4 (NC) and 1.2 (AD) years later. We calculated the following global scores: Chandler et al.'s (2005) score (summed raw scores), logistic regression on principal components analysis scores (PCA-LR), and logistic regression on demographically corrected CERAD-NAB variables (LR). Correct classification rates (CCR) were compared with areas under the receiver operating characteristics curves (AUC). The CCR of the LR score (AUC = .976) exceeded that of the PCA-LR, while the PCA-LR (AUC = .968) and Chandler (AUC = .968) scores performed comparably. Retest data improved the CCR of the PCA-LR and Chandler (trend) scores. Thus, for the German CERAD-NAB, Chandler et al.'s total score provided an effective global measure of cognitive functioning, whereby the inclusion of retest data tended to improve correct classification of individual cases.
Language
  • English
Open access status
green
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Persistent URL
https://sonar.ch/global/documents/288357
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