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The applicability of the cognitive abilities screening instrument–short (CASI-S) in primary care in Brazil

Published online by Cambridge University Press:  29 April 2015

Glaucia Martins de Oliveira ,
Juliana Emy Yokomizo ,
Laís dos Santos Vinholi e Silva ,
Laura Ferreira Saran ,
Cássio M. C. Bottino  and
Mônica Sanches Yassuda
Glaucia Martins de Oliveira
Affiliation:
School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
Juliana Emy Yokomizo
Affiliation:
Old Age Research Group (PROTER), Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
Laís dos Santos Vinholi e Silva
Affiliation:
School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
Laura Ferreira Saran
Affiliation:
Old Age Research Group (PROTER), Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
Cássio M. C. Bottino
Affiliation:
Old Age Research Group (PROTER), Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
Mônica Sanches Yassuda*
Affiliation:
School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
*
Correspondence should be addressed to: Dra. Mônica Sanches Yassuda, Av. Arlindo Bettio, 1000, Prédio I-1, sala 322-J. Ermelino Matarazzo, São Paulo, SP, 03828-000, Brazil. Phone: 551130911027. Email: yassuda@usp.br.
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Abstract

Background:

The Cognitive Abilities Screening Instrument – Short (CASI-S) is a brief cognitive screening test. However, there is limited information regarding its applicability in primary care.

Objectives:

To ascertain whether the CASI-S differentiates between dementia patients and normal controls in primary care; to examine its correlation with other cognitive instruments, to analyze its internal consistency, test-retest stability, and diagnostic accuracy.

Methods:

In a case-control study, carried out at two Primary Care Units (PCUs) in the eastern region of the city of São Paulo, 47 older adults were diagnosed with dementia according to DSM-IV criteria (mean age = 76.81 ± 7.03 years), and 55 were classified as normal controls (mean age = 72.78 ± 7.37 years), by a multidisciplinary panel which had access to results from a comprehensive cognitive battery and the patients’ health data. The present analyses included results from the Mini-Mental State Examination (MMSE). The CASI-S was not used to determine diagnostic status.

Results:

The CASI-S was easily applied in the primary care setting. There was a significant performance difference (p < 0.001) between dementia patients (15.57 ± 7.40) and normal controls (26.67 ± 3.52) on the CASI-S. CASI-S scores correlated with age (ρ = −0.410, p < 0.001), educational level (ρ = 0.373, p < 0.001), and MMSE score (ρ = 0.793, p < 0.001). The internal consistency of the CASI-S was high (α = 0.848) and the correlation between test and retest was 0.688, suggesting adequate temporal stability. In the ROC curve analyses, scores of 22/23 generated an area under the curve of 0.907, with sensitivity of 93% and specificity of 81%.

Conclusions:

The CASI-S can be useful for dementia screening in primary care in Brazil.

Keywords

elderlydementiaCASI-Sagingcognitive screeningprimary care
Type
Research Article
Information
International Psychogeriatrics , Volume 28 , Issue 1 , January 2016 , pp. 93 - 99
Copyright
Copyright © International Psychogeriatric Association 2015 

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