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


CONCLUSIONS
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.
Hrabosky
Joshua I
JI
Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA.
White
Marney A
MA
Masheb
Robin M
RM
Rothschild
Bruce S
BS
Burke-Martindale
Carolyn H
CH
Grilo
Carlos M
CM
D000293:Adolescent; D000328:Adult; D000368:Aged; D050110:Bariatric Surgery / Q000523:psychology*; D001828:Body Image; D001068:Feeding and Eating Disorders / Q000523:psychology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000523:psychology* / Q000601:surgery*; D018579:Patient Selection; D011594:Psychometrics / Q000379:methods* / Q000592:standards*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards