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Eating Disorder Examination-Questionnaire Factor Structure and Construct Validity in Bariatric Surgery Candidates

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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.

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Acknowledgments

Dr. Grilo was supported, in part, by National Institutes of Health grant K24 DK070052. Dr. Henderson was supported by the Rudd Foundation.

Conflict of Interest

Drs. Grilo, Henderson, Bell, and Crosby report no conflicts of interest.

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Correspondence to Carlos M. Grilo.

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Grilo, C.M., Henderson, K.E., Bell, R.L. et al. Eating Disorder Examination-Questionnaire Factor Structure and Construct Validity in Bariatric Surgery Candidates. OBES SURG 23, 657–662 (2013). https://doi.org/10.1007/s11695-012-0840-8

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  • DOI: https://doi.org/10.1007/s11695-012-0840-8

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