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The DAS24: A short form of the Derriford Appearance Scale DAS59 to measure individual responses to living with problems of appearance

Carr, Tony; Moss, Timothy; Harris, David

Authors

Tony Carr

Tim Moss Tim.Moss@uwe.ac.uk
Director of PGR Studies and Associate Professor

David Harris



Abstract

Objectives. To develop a psychometrically robust and widely applicable short form of the Derriford Appearance Scale, (DAS59), which (1) will reliably and validly assess the distress and difficulties experienced in living with problems of appearance, (2) is acceptable to clinical and non-clinical populations, and (3) facilitates research and clinical decision-making through good standardization and sensitivity. Design. Cross-sectional survey designs using clinical (out-patient and in-patient) and general population samples. Method. Twenty-five items were selected initially from the 59 items of the original DAS59. These were refined to 24 through item analyses and the scale was standardized on 535 patients with a range of problems of appearance and on a representative general population sample (N = 1,107). Results. All 24 items contributed well to the total score and internal consistency was high (α = .92). Test-retest reliability (6 months) was good (0.82), and criterion validity, with the DAS59, was excellent (0.88). Good construct validity was demonstrated in differences between (1) patient and general population samples, (2) members of the general population concerned and not concerned about their appearance, and (3) in patterns of convergent and divergent correlations with a range of established scales. The general population data revealed widespread concerns about appearance. Conclusion. The DAS24 provides a widely applicable and acceptable short form of the original DAS59. It is psychometrically robust and discriminates well between patient groups, between clinical and non-clinical populations, and within the general population between those concerned, and those not concerned, about their appearance. © 2005 The British Psychological Society.

Journal Article Type Article
Publication Date May 1, 2005
Journal British Journal of Health Psychology
Print ISSN 1359-107X
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 10
Issue 2
Pages 285-298
DOI https://doi.org/10.1348/135910705X27613
Keywords Derriford Appearance Scale DAS59, appearance, visible difference
Public URL https://uwe-repository.worktribe.com/output/1049783
Publisher URL http://dx.doi.org/10.1348/135910705X27613