Factor Structure and Psychometric Properties of the ED-15 in People With an Eating Disorder

IF 4.7 2区医学 Q1 NUTRITION & DIETETICS

International Journal of Eating Disorders Pub Date : 2024-08-12 DOI:10.1002/eat.24271

Yuan Zhou, Mia Pellizzer, Ella Keegan, Tracey D. Wade

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Abstract

Objective

This study examines the factorial structure and psychometric properties of the Eating Disorder-15 questionnaire (ED-15) in a large clinical sample, as well as the instrument's sensitivity to early clinical change in therapy and ability to measure remission.

Method

Participants with eating disorders (N = 278) referred to the Flinders University Services for Eating Disorders in South Australia completed the ED-15 as well as other measures of eating disorder symptoms and co-occurring psychopathology, including depression, anxiety, and stress.

Results

Confirmatory factor analysis (CFA) revealed a two-factor model for the ED-15. The ED-15 had good internal consistency. It showed satisfactory concurrent validity with moderate correlations with the EDE-Q global score and contribution of unique variance to that score. Correlations indicated good convergent validity with clinical impairment and good divergent validity from depression, anxiety, and stress. The ED-15 showed a significant medium effect size change within the first four sessions of therapy. Good discriminant validity was indicated by cut-off scores used for remission, with significantly different levels of ED psychopathology and other impairments between the two groups.

Discussion

This study adds to the four previous psychometric studies of the ED-15, confirming robustness of the English version in a clinical sample. The brevity and psychometric robustness of the ED-15 makes it a preferable measure to the Eating Disorder Examination for sessional assessment of progress in treatment.

Abstract Image

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饮食失调症患者 ED-15 的因子结构和心理测量特性。

研究目的本研究探讨了进食障碍-15问卷（ED-15）在大量临床样本中的因子结构和心理测量特性，以及该工具对早期临床治疗变化的敏感性和测量缓解的能力：方法：转诊至南澳大利亚弗林德斯大学进食障碍服务机构的进食障碍参与者（N = 278）完成了 ED-15 以及其他有关进食障碍症状和并发心理病理学（包括抑郁、焦虑和压力）的测量：确证因子分析（CFA）显示，ED-15 具有双因子模型。ED-15 具有良好的内部一致性。ED-15与EDE-Q总分具有适度的相关性，并对EDE-Q总分的独特变异做出了贡献，显示出令人满意的并发效度。相关性表明，ED-15 与临床损害具有良好的趋同效度，与抑郁、焦虑和压力具有良好的发散效度。ED-15 在治疗的前四个疗程中显示出明显的中等效应变化。用于缓解的截断分数显示出良好的判别效度，两组患者的 ED 精神病理和其他损伤水平存在显著差异：本研究是对之前四项 ED-15 心理测量研究的补充，证实了英文版 ED-15 在临床样本中的稳健性。ED-15的简洁性和心理测量的稳健性使其成为比进食障碍检查更适合用于治疗进展会期评估的测量方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Eating Disorders 医学-精神病学

CiteScore

10.00

自引率

12.70%

发文量

204

审稿时长

4-8 weeks

期刊介绍： Articles featured in the journal describe state-of-the-art scientific research on theory, methodology, etiology, clinical practice, and policy related to eating disorders, as well as contributions that facilitate scholarly critique and discussion of science and practice in the field. Theoretical and empirical work on obesity or healthy eating falls within the journal’s scope inasmuch as it facilitates the advancement of efforts to describe and understand, prevent, or treat eating disorders. IJED welcomes submissions from all regions of the world and representing all levels of inquiry (including basic science, clinical trials, implementation research, and dissemination studies), and across a full range of scientific methods, disciplines, and approaches.