Temporal stability of the eating disorder examination questionnaire
Mond, Jonathan M., Hay, Phillipa J., Rodgers, Bryan, Owen, Cathy, and Beumont, Pierre J.V. (2004) Temporal stability of the eating disorder examination questionnaire. International Journal of Eating Disorders, 36 (2). pp. 195-203.
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View at Publisher Website: http://dx.doi.org/10.1002/eat.20017
Objectives The current study examined the stability and internal consistency of the Eating Disorder Examination Questionnaire (EDE-Q) in a general population sample.
Methods The EDE-Q was administered to a community sample of women aged 18-45 on two occasions, with a median test-retest interval of 315.0 days.
Results Pearson correlations between items of the EDE-Q assessing attitudinal features of eating disorder psychopathology ranged from 0.57 for the Restraint subscale to 0.77 for the Eating Concern subscale. The stability of items addressing eating disorder behaviors was much lower, with phi coefficients for the occurrence of objective bulimic episodes, subjective bulimic episodes, and use of exercise as a compensatory behavior of 0.44, 0.24, and 0.31, respectively, and Kendall's tau b correlations of 0.44, 0.28, and 0.31, respectively, for the frequency of these behaviors, across occasions. The internal consistency of the EDE-Q was high, with a Cronbach alpha coefficient for the global scale of 0.93, compared with a value of 0.90 for the Eating Disorder Examination interview.
Discussion Items of the EDE-Q assessing attitudinal features of eating disorder psychopathology demonstrate a high degree of temporal stability, whereas the stability of items addressing eating disorder behaviors is much lower. In the case of compensatory eating disorder behaviors, low stability is likely to reflect actual trait variation, whereas the low stability of binge eating behaviors, in particular subjective bulimic episodes, is likely to reflect both trait variation and measurement error. The high internal consistency of EDE-Q items supports its use as a screening instrument in two-phase epidemiologic studies.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||Eating Disorder Examination Questionnair; reliability; temporal stability|
|FoR Codes:||11 MEDICAL AND HEALTH SCIENCES > 1103 Clinical Sciences > 110319 Psychiatry (incl Psychotherapy) @ 100%|
|SEO Codes:||92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920410 Mental Health @ 100%|
|Deposited On:||20 Mar 2010 10:58|
|Last Modified:||18 Oct 2013 00:48|
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