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Validation of the literacy independent cognitive assessment

Title
Validation of the literacy independent cognitive assessment
Authors
Choi S.H.Shim Y.S.Ryu S.-H.Ryu H.J.Lee D.W.Lee J.-Y.Jeong J.H.Han S.-H.
Ewha Authors
정지향
SCOPUS Author ID
정지향scopus
Issue Date
2011
Journal Title
International Psychogeriatrics
ISSN
1041-6102JCR Link
Citation
vol. 23, no. 4, pp. 593 - 601
Indexed
SCIE; SSCI; SCOPUS WOS scopus
Abstract
Background: Low education and illiteracy are associated with an increased risk of dementia. This study aimed to develop a neuropsychological test battery applicable to both illiterate and literate elderly and to assess its reliability and validity for a diagnosis of dementia. Methods: We developed the Literacy Independent Cognitive Assessment (LICA), which consists of 13 subtests assessing memory, language, visuoconstruction, executive function, attention and calculation. We investigated its reliability and validity on 152 patients with dementia, 66 with mild cognitive impairment and 639 normal controls. Results: The subtests were found to be applicable to most of the illiterate normal controls (97.3%) and were found to have high inter-rater reliabilities (r = 0.85-1.00, p < 0.001) and moderate to high test-retest reliabilities (r = 0.50-0.86, p < 0.001). The LICA performed well in discriminating participants across Clinical Dementia Rating stages and showed excellent internal consistency and good concurrent validity with the Korean Mini-mental State Examination in both literate and illiterate participants. The area under the curve of the receiver operating characteristic was 0.985 in each of the two literacy groups. Sensitivity and specificity of the LICA to make a diagnosis of dementia was 91.9% and 91.8% at the cutoff point of 186.0 in the literate subjects and 96.2% and 91.1% at the cutoff point of 154.5 in the illiterate subjects. The battery was factored into two separate factors consisting of verbal memory tests and tests for other cognitive domains. Conclusion: The LICA is a valid and reliable instrument for a diagnosis of dementia in both illiterate and literate elderly. © 2012 International Psychogeriatric Association.
DOI
10.1017/S1041610210001626
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의학전문대학원 > 의학과 > Journal papers
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