Erschienen in:
01.05.2013 | Original Contributions
Eating Disorder Examination-Questionnaire Factor Structure and Construct Validity in Bariatric Surgery Candidates
verfasst von:
Carlos M. Grilo, Kathryn E. Henderson, Robert L. Bell, Ross D. Crosby
Erschienen in:
Obesity Surgery
|
Ausgabe 5/2013
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Abstract
Background
The Eating Disorder Examination-Questionnaire (EDE-Q) is increasingly used in studies with bariatric surgery patients although little is known about psychometric properties of this self-report measure in this clinical group. The current study evaluated the factor structure and construct validity of the EDE-Q in bariatric surgery candidates.
Methods
Participants were a consecutive series of 174 obese bariatric surgery candidates who completed the EDE-Q and a battery of behavioral and psychological measures.
Results
Confirmatory factor analysis (CFA) revealed an inadequate fit for the original EDE-Q structure but revealed a good fit for an alternative structure suggested by recent research with obese samples. CFA supported a seven-item, three-factor structure; the three factors were interpreted as dietary restraint, shape/weight overvaluation, and body dissatisfaction. The three factors converged with other relevant collateral measures.
Conclusions
These factor analytic findings, which replicate recent findings from studies with diverse obese samples, demonstrated convergent validity. Implications of these findings for clinical assessment and research with bariatric surgery patients are discussed.