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Development and validation of the brief-satisfaction with appearance scale for systemic sclerosis
Lisa R Jewett1, Marie Hudson, Jennifer A Haythornthwaite
1McGill University and Lady Davis Institute of the Jewish General Hospital, Montréal, Québec, Canada.
Arthritis Care & Research
|July 29, 2010
Summary
A new brief version of the Satisfaction with Appearance Scale (SWAP) was developed for systemic sclerosis (SSc). This shorter scale accurately assesses body image concerns in SSc patients, improving assessment feasibility.
Area of Science:
- Rheumatology
- Psychology
- Medical Sociology
Background:
- Body image concerns are a significant but understudied aspect of systemic sclerosis (SSc).
- Existing assessment tools may lack SSc-specific relevance and brevity.
- There is a need for a more feasible and targeted body image assessment in SSc patients.
Purpose of the Study:
- To develop and cross-validate a brief version of the Satisfaction with Appearance Scale (SWAP) for use in systemic sclerosis (SSc).
- To enhance SSc relevancy and improve the feasibility of body image assessment.
- To reduce item redundancy in body image evaluation for SSc patients.
Main Methods:
- A 14-item SWAP was administered to female SSc patients in development and validation samples.
- A 6-item Brief-SWAP was created based on theoretical and psychometric data.
- Internal consistency, convergent validity, and factor structure were compared between the Brief-SWAP and full SWAP.
Main Results:
- The Brief-SWAP demonstrated high reliability (Cronbach's alpha=0.82) in both samples.
- Strong correlations were observed between the Brief-SWAP and full SWAP (0.94-0.95).
- Confirmatory factor analysis indicated good model fit for the Brief-SWAP, outperforming the full SWAP.
Conclusions:
- The Brief-SWAP is a reliable and valid measure for assessing body image dissatisfaction and social discomfort in SSc.
- This brief scale offers improved feasibility for clinical implementation compared to the full SWAP.
- The Brief-SWAP effectively captures key body image aspects relevant to SSc patients.
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