The influence of diversity on the measurement of functional impairment: An international validation of the Amsterdam IADL Questionnaire in eight countries.
Alzheimer's disease
cross‐cultural validation
dementia
differential item functioning
diversity
functional decline
instrumental activities of daily living
item response theory
Journal
Alzheimer's & dementia (Amsterdam, Netherlands)
ISSN: 2352-8729
Titre abrégé: Alzheimers Dement (Amst)
Pays: United States
ID NLM: 101654604
Informations de publication
Date de publication:
2020
2020
Historique:
received:
14
11
2019
revised:
16
01
2020
accepted:
23
01
2020
entrez:
19
5
2020
pubmed:
19
5
2020
medline:
19
5
2020
Statut:
epublish
Résumé
To understand the potential influence of diversity on the measurement of functional impairment in dementia, we aimed to investigate possible bias caused by age, gender, education, and cultural differences. A total of 3571 individuals (67.1 ± 9.5 years old, 44.7% female) from The Netherlands, Spain, France, United States, United Kingdom, Greece, Serbia, and Finland were included. Functional impairment was measured using the Amsterdam Instrumental Activities of Daily Living (IADL) Questionnaire. Item bias was assessed using differential item functioning (DIF) analysis. There were some differences in activity endorsement. A few items showed statistically significant DIF. However, there was no evidence of meaningful item bias: Effect sizes were low (Δ The results imply a limited bias for age, gender, education, and culture in the measurement of functional impairment. This study provides an important step in recognizing the potential influence of diversity on primary outcomes in dementia research.
Identifiants
pubmed: 32420446
doi: 10.1002/dad2.12021
pii: DAD212021
pmc: PMC7219786
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e12021Subventions
Organisme : The Dunhill Medical Trust
ID : R380R/1114
Pays : United Kingdom
Informations de copyright
© 2020 The Authors. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring published by Wiley Periodicals, Inc. on behalf of Alzheimer's Association.
Déclaration de conflit d'intérêts
The Amsterdam IADL Questionnaire was developed by S.A.M.S. and P.S., who were involved in the conception of the present study. The other authors report no conflict of interests.
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