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. 2014 Dec 18;4(3):509-16.
doi: 10.1159/000357775. eCollection 2014 Sep-Dec.

The Alzheimer's disease cooperative study prevention instrument project: longitudinal outcome of behavioral measures as predictors of cognitive decline

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The Alzheimer's disease cooperative study prevention instrument project: longitudinal outcome of behavioral measures as predictors of cognitive decline

Sarah Jane Banks et al. Dement Geriatr Cogn Dis Extra. .

Abstract

Background/methods: The Alzheimer's Disease Cooperative Study Prevention Instrument Project is a longitudinal study that recruited 644 cognitively healthy older subjects (aged between 75 and 93 years, 58% women) at baseline and evaluated their cognitive change over 4 years. The study was structured like a clinical trial to anticipate a prevention trial and to determine the performance of novel trial instruments in a longitudinal non-interventional trial framework. Behavioral symptoms were assessed at baseline.

Results: The existence of participant-reported behavioral symptoms at baseline predicted conversion to Clinical Dementia Rating scale score ≥0.5 over the 4-year period.

Conclusions: The results imply that early anxiety and depression may be harbingers of future cognitive decline, and that patients exhibiting such symptoms, even in the absence of co-occurring cognitive symptoms, should be closely followed over time.

Keywords: Aging; Alzheimer's disease; Anxiety; Depression; Mild cognitive impairment.

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Figures

Fig. 1
Fig. 1
Percentage of participants reporting each symptom at baseline, separated by subject and partner.

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