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Convergence of Scores on the Interview and Questionnaire Versions of the Eating Disorder Examination: A Meta-Analytic Review

Date Published: 9/12

Convergence of Scores on the Interview and Questionnaire Versions of the Eating Disorder Examination: A Meta-Analytic Review

Date Published: 9/12

Abstract: Significant discrepancies have been found between interview- and questionnaire-based assessments of psychopathology; however, these studies have typically compared instruments with unmatched item content. The Eating Disorder Examination (EDE), a structured interview, and the questionnaire version of the EDE (EDE-Q) are considered the preeminent assessments of eating disorder symptoms and provide a unique opportunity to examine the concordance of interview and questionnaire-based instruments with matched item content. The convergence of EDE and EDE-Q scores has been examined previously; however, past studies have been limited by small sample sizes and have not compared the convergence of scores across diagnostic groups. A metaanalysis of 16 studies was conducted to compare the convergence of EDE and EDE-Q scores across studies and diagnostic groups. With regard to the EDE and EDE-Q subscale scores, the overall correlation coefficient effect sizes ranged from .64 to .75. The overall Cohen's d effect sizes ranged from .31 to .59 with participants consistently scoring higher on the questionnaire. With regard to the items measuring behavior frequency, the overall correlation coefficient effect sizes ranged from .49 to .64 for binge eating and .84 to .89 for compensatory behaviors. The overall Cohen's d effect sizes ranged from -.14 to -.23, with participants reporting more binge eating on the interview in 70% of the studies. These results suggest that the interview and questionnaire assess similar constructs, but that the two instruments should not be used interchangeably. Additional research is needed to examine the inconsistencies between binge frequency scores on the two instruments.

Authors:

Kelly C. Berg,
Department of Psychology, University of Minnesota, Department of Psychiatry, University of Minnesota
Carol B. Peterson,
Department of Psychiatry, University of Minnesota
Patricia Frazier, and
Department of Psychology, University of Minnesota
Scott J. Crow
Department of Psychiatry, University of Minnesota

Download Full Paper: PDF (334kb)

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