Factor structure of the Eating Disorder Examination-Questionnaire (EDE-Q) in adult men with eating disorders

J Eat Disord. 2023 Mar 6;11(1):34. doi: 10.1186/s40337-023-00757-4.

Abstract

Background: Previous investigations on the Eating Disorder Examination-Questionnaire (EDE-Q) factor structures in men have been restricted to non-clinical settings, limiting conclusions about the factorial validity in men with eating disorders (ED). This study aimed to examine the factor structure of the German EDE-Q in a clinical group of adult men with diagnosed ED.

Methods: ED symptoms were assessed using the validated German version of the EDE-Q. Exploratory factor analysis (EFA) using principal-axis factoring based on polychoric correlations was conducted for the full sample (N = 188) using Varimax-Rotation with Kaiser-Normalization.

Results: Horn's parallel analysis suggested a five-factor solution with an explained variance of 68%. The EFA factors were labeled "Restraint" (items 1, 3-6), "Body Dissatisfaction" (items 25-28), "Weight Concern" (items 10-12, 20), "Preoccupation" (items 7 and 8), and "Importance" (items 22 and 23). Items 2, 9, 19, 21, and 24 were excluded due to low communalities.

Conclusions: Factors associated with body concerns and body dissatisfaction in adult men with ED are not fully represented in the EDE-Q. This could be due to differences in body ideals in men, e.g., the underestimation of the role of concerns about musculature. Consequently, it may be useful to apply the 17-item five-factor structure of the EDE-Q presented here to adult men with diagnosed ED.

Keywords: Body dissatisfaction; EDE-Q; Eating Disorder Examination-Questionnaire; Eating disorders; Factor analysis; Men’s health; Muscularity.