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Obesity (Silver Spring). 2008 Apr;16(4):763-9. doi: 10.1038/oby.2008.3. Epub 2008 Feb 7.

Psychometric evaluation of the eating disorder examination-questionnaire for bariatric surgery candidates.

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  • 1Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA.

Abstract

OBJECTIVE:

Despite increasing use of the Eating Disorder Examination-Questionnaire (EDE-Q) in bariatric surgery patients, little is known about the utility and psychometric performance of this self-report measure in this clinical group. The primary purpose of the current study was to evaluate the factor structure and construct validity of the EDE-Q in a large series of bariatric surgery candidates.

METHODS AND PROCEDURES:

Participants were 337 obese bariatric surgery candidates. Participants completed the EDE-Q and a battery of behavioral and psychological measures.

RESULTS:

Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) produced a 12-item, 4-factor structure of the EDE-Q. The four factors, interpreted as Dietary Restraint, Eating Disturbance, Appearance Concerns, and Shape/Weight Overvaluation, were found to be internally consistent and converged with other relevant measures of psychopathology.

DISCUSSION:

Factor analysis of the EDE-Q in bariatric surgery candidates did not replicate the original subscales but revealed an alternative factor structure. Future research must further evaluate the psychometric properties, including the factor structure, of the EDE-Q in this and other diverse populations and consider means of improving this measure's ability to best assess eating-related pathology in bariatric surgery patients.

PMID:
18379561
[PubMed - indexed for MEDLINE]
PMCID:
PMC3671755
Free PMC Article
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