OBJECTIVE: To assess the factor structure of the Eating Disorder Examination (EDE) in three different samples and to compare the goodness-of-fit of five models of EDE data. METHOD: The EDE was administered to eating disordered (n = 158), treatment-seeking obese (n = 170) and non-eating disordered community-based (n = 329) participants. Confirmatory factor analysis was used to compare the validity of the original four-factor EDE model with that of three-, two-, and one-factor models. RESULTS: None of the tested models provided a "good fit" to the data in any sample, with the exception of a brief one-factor model in the eating disorder group. Estimations of internal consistency, reliability, and validity were superior for the one-, two-, and three-factor models compared to the four-factor model in all samples. DISCUSSION: Overall, there was more support for a one-factor model of EDE data than for a multi-factorial model. It may be more appropriate to use Global EDE scores than individual subscale scores for research purposes.
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