The social functioning in dementia scale (SF‐DEM): Exploratory factor analysis and psychometric properties in mild, moderate, and severe dementia

Journal article

Budgett, Jessica, Brown, Anna, Daley, Stephanie, Page, Thomas E., Banerjee, Sube, Livingston, Gill and Sommerlad, Andrew 2018. The social functioning in dementia scale (SF‐DEM): Exploratory factor analysis and psychometric properties in mild, moderate, and severe dementia. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring. 11 (1), pp. 45-52. https://doi.org/10.1016/j.dadm.2018.11.001
AuthorsBudgett, Jessica, Brown, Anna, Daley, Stephanie, Page, Thomas E., Banerjee, Sube, Livingston, Gill and Sommerlad, Andrew
Abstract

The psychometric properties of the social functioning in dementia scale over different dementia severities are unknown. We interviewed 299 family carers of people with mild, moderate, or severe dementia from two UK research sites; examined acceptability (completion rates); conducted exploratory factor analysis; and tested each factor's internal consistency and construct validity. Of 299, 285 (95.3%) carers completed questionnaires. Factor analysis indicated three distinct factors with acceptable internal consistency: spending time with other people, correlating with overall social function (r = 0.56, P < .001) and activities of daily living (r = −0.48, P < .001); communicating with other people correlating with activities of daily living (r = −0.66, P < .001); and sensitivity to other people correlating with quality of life (r = 0.35, P < .001) and inversely with neuropsychiatric symptoms (r = −0.45, P < .001). The three factors' correlations with other domains were similar across all dementia severities.
The social functioning in dementia scale carer version measures three social functioning domains and has satisfactory psychometric properties in all severities of dementia.

Keywordspsychometrics, factor analysis, social behaviour, dementia, behaviour rating scale
Year2018
JournalAlzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
Journal citation11 (1), pp. 45-52
PublisherWiley
ISSN2352-8729
Digital Object Identifier (DOI)https://doi.org/10.1016/j.dadm.2018.11.001
Web address (URL)http://hdl.handle.net/10545/624749
http://creativecommons.org/licenses/by/4.0/
hdl:10545/624749
Publication dates14 Dec 2018
Publication process dates
Deposited29 Apr 2020, 11:27
Accepted2018
Rights

© 2018 The Authors. Published by Elsevier Inc. on behalf of the Alzheimer's Association.

ContributorsUniversity College London, University of Kent and University of Sussex
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