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Cognitive Function in Low-Income and Low-Literacy Settings: Validation of the Tablet-Based Oxford Cognitive Screen in the Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community in South Africa (HAALSI).
- Source :
-
The journals of gerontology. Series B, Psychological sciences and social sciences [J Gerontol B Psychol Sci Soc Sci] 2017 Jan; Vol. 72 (1), pp. 38-50. Date of Electronic Publication: 2016 Oct 21. - Publication Year :
- 2017
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Abstract
- Objectives: 1. Assess validity of the Oxford Cognitive Screen (OCS-Plus), a domain-specific cognitive assessment designed for low-literacy settings, especially in low- and middle-income countries (LMIC); 2. Advance theoretical contributions in cognitive neuroscience in domain-specific cognitive function and cognitive reserve, especially related to dementia.<br />Method: In a cross-sectional study of a sample of 1,402 men and women aged 40-79 in the Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community in South Africa (HAALSI), we administered OCS-Plus along with health and sociodemographic assessments. HAALSI is a representative sample of older adults in Agincourt, South Africa contributing to normative understanding of cognition in LMIC. We report measure distributions, construct and external validity of the OCS-Plus.<br />Results: OCS-Plus has excellent construct and external validity. Intra-class correlations between similar basic measures of orientation in OCS-Plus and in HAALSI assessments was 0.79, and groups of people performing well on the OCS-Plus verbal memory also showed superior performance on HAALSI verbal memory. The OCS-Plus scores showed consistent associations with age and education and domain-specific associations with alcohol and depression. Younger respondents and the more educated did better on all assessments.<br />Discussion: The OCS-Plus represents a major methodological advance in dementia studies in LMICs, and enhances understanding of cognitive aging.<br /> (© The Author 2016. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Subjects :
- Adult
Aged
Cognitive Reserve
Cross-Sectional Studies
Dementia diagnosis
Dementia psychology
Female
Humans
Longitudinal Studies
Male
Middle Aged
Reproducibility of Results
South Africa
Cognition
Literacy
Mass Screening statistics & numerical data
Neuropsychological Tests statistics & numerical data
Poverty psychology
Poverty statistics & numerical data
Psychometrics statistics & numerical data
Subjects
Details
- Language :
- English
- ISSN :
- 1758-5368
- Volume :
- 72
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- The journals of gerontology. Series B, Psychological sciences and social sciences
- Publication Type :
- Academic Journal
- Accession number :
- 27974474
- Full Text :
- https://doi.org/10.1093/geronb/gbw139