Serier Kelsey N, Smith Jane Ellen, Yeater Elizabeth A
Department of Psychology, MSCO3 2220, 1 University of New Mexico, Albuquerque, NM 87131, USA.
Eat Behav. 2018 Dec;31:53-59. doi: 10.1016/j.eatbeh.2018.08.004. Epub 2018 Aug 11.
Body dissatisfaction and eating disorder rates have increased in racial and ethnic minority groups, yet the validity of various commonly-used eating disorder instruments has not been established in these populations. One way to establish validity is to test for measurement invariance; namely, that the same constructs are being measured across groups. This study tested the measurement invariance of the Eating Disorder Examination Questionnaire (EDE-Q) across non-Hispanic White and Hispanic women.
Female undergraduates (n = 561) were recruited from a southwestern U.S. university. Confirmatory factor analysis (CFA) and measurement invariance of the EDE-Q were tested in non-Hispanic White and Hispanic samples.
CFA analyses revealed that the original four-factor structure did not fit the data in either group. Only a modified 7-item, three-factor structure of the EDE-Q provided an acceptable fit in both non-Hispanic White and Hispanic women. Thus, this modified EDE-Q factor structure was used to test the equivalence of the measure between groups. Results found that the factor structure was similar across groups, but the factor loadings and intercepts differed across non-Hispanic White and Hispanic women.
A modified 7-item, three-factor structure of the EDE-Q provided an acceptable fit of the data, which is supported by previous research. However, the lack of measurement invariance suggests that researchers should be cautious when using this modified EDE-Q to make explicit comparisons between non-Hispanic White and Hispanic women. Future research should further examine the psychometric properties of the EDE-Q in ethnically diverse groups, specifically the role of dietary restraint among Hispanic women.
身体不满和饮食失调率在种族和少数族裔群体中有所上升，但各种常用饮食失调测量工具在这些人群中的有效性尚未得到证实。确立有效性的一种方法是检验测量不变性；也就是说，跨群体测量的是相同的结构。本研究检验了饮食失调检查问卷（EDE-Q）在非西班牙裔白人女性和西班牙裔女性中的测量不变性。
从美国西南部一所大学招募了女性本科生（n = 561）。在非西班牙裔白人样本和西班牙裔样本中对EDE-Q进行验证性因素分析（CFA）和测量不变性检验。
CFA分析表明，最初的四因素结构均不适合两组数据。只有修改后的7项三因素结构的EDE-Q在非西班牙裔白人女性和西班牙裔女性中均提供了可接受的拟合度。因此，使用这种修改后的EDE-Q因素结构来检验两组之间测量的等效性。结果发现，两组的因素结构相似，但非西班牙裔白人女性和西班牙裔女性的因素负荷和截距不同。
修改后的7项三因素结构的EDE-Q提供了可接受的数据拟合度，这得到了先前研究的支持。然而，缺乏测量不变性表明，研究人员在使用这种修改后的EDE-Q对非西班牙裔白人女性和西班牙裔女性进行明确比较时应谨慎。未来的研究应进一步检验EDE-Q在不同种族群体中的心理测量特性，特别是饮食限制在西班牙裔女性中的作用。
