Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study.
Activity limitations
Central Africa
Daily functioning interference
Dementia diagnosis
Item response theory
Participation restrictions
Psychometric evaluation
Journal
Dementia and geriatric cognitive disorders
ISSN: 1421-9824
Titre abrégé: Dement Geriatr Cogn Disord
Pays: Switzerland
ID NLM: 9705200
Informations de publication
Date de publication:
2019
2019
Historique:
received:
15
03
2018
accepted:
08
08
2018
pubmed:
11
1
2019
medline:
18
12
2019
entrez:
11
1
2019
Statut:
ppublish
Résumé
There are a few validated tools capable of assessing the dimensions essential for the diagnosis of dementia and cognitive disorders in sub-Saharan Africa. Our aim was to develop an adapted tool, the Central African - Daily Functioning Interference (DFI) scale. An initial 16-item scale of activity limitations and participation restrictions was completed by 301 participants with low cognitive performances to assess their level of DFI. A psychometric evaluation was performed using Item Response Theory. A unidimensional 10-item scale emerged with a reasonable coverage of DFI (thresholds range: -1.067 to 1.587) with good item discrimination properties (1.397-4.076) and a high reliability (Cronbach's al pha = 0.92). The cutoff for detecting 96% of those with dementia was with a latent score ≥0.035 that corresponds to the LAUNDRY limitation. These results provide valuable support for the reliability and internal validity of an operational 10-item scale for DFI assessment used in Central Africa for the diagnosis of dementia in the elderly.
Sections du résumé
BACKGROUND
There are a few validated tools capable of assessing the dimensions essential for the diagnosis of dementia and cognitive disorders in sub-Saharan Africa.
OBJECTIVES
Our aim was to develop an adapted tool, the Central African - Daily Functioning Interference (DFI) scale.
METHODS
An initial 16-item scale of activity limitations and participation restrictions was completed by 301 participants with low cognitive performances to assess their level of DFI. A psychometric evaluation was performed using Item Response Theory.
RESULTS
A unidimensional 10-item scale emerged with a reasonable coverage of DFI (thresholds range: -1.067 to 1.587) with good item discrimination properties (1.397-4.076) and a high reliability (Cronbach's al pha = 0.92). The cutoff for detecting 96% of those with dementia was with a latent score ≥0.035 that corresponds to the LAUNDRY limitation.
CONCLUSIONS
These results provide valuable support for the reliability and internal validity of an operational 10-item scale for DFI assessment used in Central Africa for the diagnosis of dementia in the elderly.
Identifiants
pubmed: 30630171
pii: 000492782
doi: 10.1159/000492782
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
29-41Informations de copyright
© 2019 S. Karger AG, Basel.