Confirmatory factor analysis of the Eating Disorder Examination-Questionnaire (EDE-Q)

Psychometric Evaluation of Disordered Eating Measures in Bariatric Surgery Candidates

“…Similarly, the original factor structure was not supported by Grilo et al [19], who identified a sevenitem three-factor model (dietary restraint, body dissatisfaction and shape/weight overvaluation). Findings from both studies are consistent with multiple factor analyses of the EDE-Q in non-bariatric surgery samples which have also failed to replicate the original four-factor structure and suggested alternative factors [20][21][22]. No other disordered eating measures have undergone factor analysis in bariatric surgery candidates [8].…”

“…EDE-Q The original four-factor solution could not be estimated due to a covariance matrix that was not positive definite, which appeared to be due to a linear dependency between the subscales shape concern and weight concern (r=1.00) and is a common finding for these scales [18][19][20]. Based on the same rationale applied to the four-factor solution for the EDE, these subscales were not combined using CFA.…”

“…Given the poor original factor structure of the EDE and EDE-Q evident in this study and reported in previous studies [18][19][20]23], a three-factor model was tested as outlined by Byrne et al [20] was interpreted as restraint, eating concern and weight and shape concern. An alternative four-factor model proposed by Hrabosky et al [18] was not tested as it included additional behavioural frequency items that were not part of the original scales.…”

“…A seven-item three-factor model proposed by Grilo et al [19] was not tested due to the substantial item reduction and loss of one of the underlying constructs. An eight-item one-factor model proposed by Wade and colleagues [57] that has been previously tested [20,23] was not assessed as the reduction to one factor substantially altered the measure to the extent that underlying constructs were not distinguishable.…”

Development, psychometric properties and preliminary clinical validation of a brief, session‐by‐session measure of eating disorder cognitions and behaviors: The ED‐15

“…Furthermore, recent post hoc assessments of its psychometric properties have shown that the factor structure of the EDE-Q does not match or approximate to the item groupings used in its sub-scales (24)(25)(26). Its measure of objective bingeing has also been called into question (27).…”