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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Community validation of the IDEA study cognitive screen in rural Tanzania
International Journal of Geriatric Psychiatry, Volume 31, No. 11, Year 2016
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Description
Objectives: The dementia diagnosis gap in sub-Saharan Africa (SSA) is large, partly because of difficulties in screening for cognitive impairment in the community. As part of the Identification and Intervention for Dementia in Elderly Africans (IDEA) study, we aimed to validate the IDEA cognitive screen in a community-based sample in rural Tanzania. Methods: Study participants were recruited from people who attended screening days held in villages within the rural Hai district of Tanzania. Criterion validity was assessed against the gold standard clinical dementia diagnosis using DSM-IV criteria. Construct validity was assessed against, age, education, sex and grip strength and instrumental activities of daily living (IADLs). Internal consistency and floor and ceiling effects were also examined. Results: During community screening, the IDEA cognitive screen had high criterion validity, with an area under the receiver operating characteristic curve of 0.855 (95% CI 0.794 to 0.915). Higher scores on the screen were significantly correlated with lower age, male sex, having attended school, better grip strength and improved performance in activities of daily living. Factor analysis revealed a single factor with an eigenvalue greater than one, although internal consistency was only moderate (Cronbach's alpha = 0.534). Conclusions: The IDEA cognitive screen had high criterion and construct validity and is suitable for use as a cognitive screening instrument in a community setting in SSA. Only moderate internal consistency may partly reflect the multi-domain nature of dementia as diagnosed clinically. Copyright © 2016 John Wiley & Sons, Ltd.
Authors & Co-Authors
Gray, William Keith
United Kingdom, North Shields
North Tyneside General Hospital
Paddick, Stella Maria
United Kingdom, North Shields
North Tyneside General Hospital
United Kingdom, Newcastle
University of Newcastle Upon Tyne, Faculty of Medical Sciences
Collingwood, Cecilia
United Kingdom, Newcastle
School of Medical Education
Kisoli, Aloyce
Tanzania
Hai District Medical Office
Mbowe, Godfrey
Tanzania, Moshi
Kilimanjaro Christian Medical University College
Mkenda, Sarah H.
Tanzania, Moshi
Kilimanjaro Christian Medical University College
Lissu, Carolyn A.
Tanzania, Moshi
Kilimanjaro Christian Medical University College
Rogathi, Jane Januarius
Tanzania, Moshi
Kilimanjaro Christian Medical Centre
Kissima, John
Tanzania
Hai District Medical Office
Walker, Richard William
United Kingdom, North Shields
North Tyneside General Hospital
United Kingdom, Newcastle
University of Newcastle Upon Tyne, Faculty of Medical Sciences
Mushi, Declare L.
Tanzania, Moshi
Kilimanjaro Christian Medical University College
Chaote, Paul
Tanzania
Hai District Medical Office
Ogunniyi, Adesola O.
Nigeria, Ibadan
University College Hospital, Ibadan
Dotchin, Catherine Louise
United Kingdom, North Shields
North Tyneside General Hospital
United Kingdom, Newcastle
Newcastle University
Statistics
Citations: 25
Authors: 14
Affiliations: 8
Identifiers
Doi:
10.1002/gps.4415
e-ISSN:
10991166
Research Areas
Mental Health
Study Design
Randomised Control Trial
Study Locations
Tanzania
Participants Gender
Male