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Archives of Clinical Neuropsychology Advance Access published online on July 29, 2009
Archives of Clinical Neuropsychology, doi:10.1093/arclin/acp033
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© The Author 2009. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

Short Cognitive Performance Test: Diagnostic Accuracy and Education Bias in Older Brazilian Adults

Mariana K. Flaksa, Orestes V. Forlenzaa, Fernanda S. Pereiraa, Luciane F. Violaa and Mônica S. Yassudaa,b,*

a Psychogeriatric Unit, Laboratory of Neuroscience (LIM 27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo – SP, Brazil
b Gerontology, School of Arts, Sciences and Humanities (EACH), University of São Paulo, São Paulo – SP, Brazil

* Corresponding author at: Laboratory of Neuroscience (LIM 27), Department and Institute of Psychiatry, Rua Dr. Ovídio Pires de Campos, 785 – Cerqueira César, 05403-010 São Paulo – SP, Brazil. Tel.: +55-11-3069-7267; fax: +55-11-3069-7924. E-mail address: yassuda{at}usp.br (M.S. Yassuda).


  Abstract

The "Short Cognitive Performance Test" (Syndrom Kurztest, SKT) is a cognitive screening battery designed to detect memory and attention deficits. The aim of this study was to evaluate the diagnostic accuracy of the SKT as a screening tool for mild cognitive impairment (MCI) and dementia. A total of 46 patients with Alzheimer's disease (AD), 82 with MCI, and 56 healthy controls were included in the study. Patients and controls were allocated into two groups according to educational level (≤8 years or >8 years). ROC analyses suggested that the SKT adequately discriminates AD from non-demented subjects (MCI and controls), irrespective of the education group. The test had good sensitivity to discriminate MCI from unimpaired controls in the sub-sample of individuals with more than 8 years of schooling. Our findings suggest that the SKT is a good screening test for cognitive impairment and dementia. However, test results must be interpreted with caution when administered to less-educated individuals.

Keywords Neuropsychology; Screening tools; Diagnosis; Dementia; Cognitive aging; Education

Accepted: June 11, 2009


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