Abstract
Although the EDE-Q is derived from the "gold standard" for the assessment of eating disorders (ED), its factor structure is controversial, particularly in male samples. The aim of the study was to examine the psychometric properties and factor structure of the EDE-Q, as well as to establish a sensitive and specific cut-off point validated by EDE clinical interview. A series of Confirmatory Factor Analyses were performed among a representative sample of 796 male university students, of whom 139 were interviewed. Sensitivity and specificity were calculated by receiver-operating characteristic (ROC) analysis to determinate the most appropriate cut-off value. The original factor structure was not confirmed, showing a better fit with a 2-factor solution. For the Spanish male sample, a cut-off ≥ 1.09 for at-risk of ED cases and ≥ 2.41 for clinical cases presents an optimal balance between sensitivity and specificity. The establishment of specific cut-off points for males may help to reduce the under-diagnosis of ED in this population. III: evidence obtained from well-designed case-control study.
Highlights
The Eating Disorders Examination Questionnaire (EDE-Q) [1] is derived from the “gold standard” for the assessment and diagnosis of eating disorders (ED), the Eating Disorders Examination interview (EDE) [2]
The factor model of the EDE-Q with its interview equivalent (the EDE)-Q has been tested through Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) in multiple studies with samples differing in nationality, age, sex, sexual orientation or clinical status
The aim of this study is to extend the current literature by examining the psychometric properties and factor structure of the EDE-Q, as well to determine/stablish a sensitive and specific cut-off point validated by EDE clinical interview in a large nonclinical representative sample of Spanish university men
Summary
The Eating Disorders Examination Questionnaire (EDE-Q) [1] is derived from the “gold standard” for the assessment and diagnosis of eating disorders (ED), the Eating Disorders Examination interview (EDE) [2]. The theoretical structure of the EDE-Q is composed by 4 factors (i.e., Restraint, Eating Concern, Weight Concern and Shape Concern) and a global score. This structure has found little empirical support and is controversial [6, 7]. The factor model of the EDE-Q has been tested through Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) in multiple studies with samples differing in nationality, age, sex, sexual orientation or clinical status. Retaining the original 22 items, there are 12 proposed factorial structures, from unifactorial to 4-factor alternatives, with those proposing factor models that merge the "Concern" subscales in some way being common. For short models there are at least 9 alternatives to the original factorial model with fewer items [see 6 and 8 for review)
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