Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring (Jan 2021)

Cognitive profiles of patients with mild cognitive impairment due to Alzheimer's versus Parkinson's disease defined using a base rate approach: Implications for neuropsychological assessments

  • Anja Ophey,
  • Steffen Wolfsgruber,
  • Sandra Roeske,
  • Alexandra Polcher,
  • Annika Spottke,
  • Lutz Frölich,
  • Michael Hüll,
  • Frank Jessen,
  • Johannes Kornhuber,
  • Wolfgang Maier,
  • Oliver Peters,
  • Alfredo Ramirez,
  • Jens Wiltfang,
  • Inga Liepelt‐Scarfone,
  • Sara Becker,
  • Daniela Berg,
  • Jörg B. Schulz,
  • Kathrin Reetz,
  • Jennifer Wojtala,
  • Jan Kassubek,
  • Alexander Storch,
  • Monika Balzer‐Geldsetzer,
  • Rüdiger Hilker‐Roggendorf,
  • Karsten Witt,
  • Brit Mollenhauer,
  • Claudia Trenkwalder,
  • Hans‐Ullrich Wittchen,
  • Oliver Riedel,
  • Richard Dodel,
  • Michael Wagner,
  • Elke Kalbe

DOI
https://doi.org/10.1002/dad2.12223
Journal volume & issue
Vol. 13, no. 1
pp. n/a – n/a

Abstract

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Abstract Introduction Large studies on cognitive profiles of patients with mild cognitive impairment (MCI) due to Alzheimer's disease (AD‐MCI) compared to Parkinson's disease (PD‐MCI) are rare. Methods Data from two multicenter cohort studies in AD and PD were merged using a unified base rate approach for the MCI diagnosis. Cognitive profiles were compared using scores derived from the Consortium to Establish a Registry for Alzheimer's Disease battery. Results Patients with AD‐MCI showed lower standardized scores on all memory test scores and a language test. Patients with PD‐MCI showed lower standardized scores in a set‐shifting measure as an executive task. A cross‐validated logistic regression with test scores as predictors was able to classify 72% of patients correctly to AD‐MCI versus PD‐MCI. Discussion The applied test battery successfully discriminated between AD‐MCI and PD‐MCI. Neuropsychological test batteries in clinical practice should always include a broad spectrum of cognitive domains to capture any cognitive changes.

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