Belon Katherine E, McLaughlin Elizabeth A, Smith Jane Ellen, Bryan Angela D, Witkiewitz Katie, Lash Denise N, Winn Jaime L
Department of Psychology, University of New Mexico, Albuquerque, New Mexico.
Int J Eat Disord. 2015 Apr;48(3):262-70. doi: 10.1002/eat.22286. Epub 2014 Apr 17.
The factor structure of the Eating Disorder Inventory (EDI) has not been thoroughly tested in Hispanic populations, yet researchers commonly use this instrument in Hispanic samples. Thus, it is important to establish the validity of the EDI in Hispanic populations. This article investigated measurement invariance of the EDI's three eating- and weight-related (eat/wt) scales because they are the most frequently used and are often used in isolation. These scales include Drive for Thinness, Bulimia, and Body Dissatisfaction.
Female undergraduates were recruited for a study on body image. The final sample (N = 688) included participants categorized as Hispanic (N = 385) or Caucasian (N = 303). They completed the EDI-3 and a measure of acculturation.
Measurement invariance analyses of the EDI-3 in Caucasian and Hispanic samples were conducted. The configural model provided an acceptable fit, providing support for the three-factor structure of the eat/wt scales in both the Caucasian and the Hispanic sample. However, weak invariance of the three-factor structure was not supported. When measurement invariance analyses were conducted on the three eat/wt scales separately, Drive for Thinness was the only scale to demonstrate measurement invariance.
The theoretical three-factor structure of the EDI eat/wt scales was supported in both ethnic groups. Furthermore, the Drive for Thinness scale can readily be used to make group comparisons across nonclinical samples of Caucasian and Hispanic women, but researchers should be cautious when using the other two eat/wt scales to make comparisons across these two groups.
进食障碍量表（EDI）的因子结构在西班牙裔人群中尚未得到充分检验，但研究人员在西班牙裔样本中普遍使用该工具。因此，确定EDI在西班牙裔人群中的有效性很重要。本文研究了EDI三个与饮食和体重相关（饮食/体重）量表的测量不变性，因为它们是最常用的，且经常单独使用。这些量表包括追求瘦身、贪食和身体不满。
招募女大学生参与一项关于身体意象的研究。最终样本（N = 688）包括被归类为西班牙裔（N = 385）或白种人（N = 303）的参与者。她们完成了EDI - 3和一项文化适应测量。
对白人样本和西班牙裔样本中的EDI - 3进行了测量不变性分析。构型模型提供了可接受的拟合度，支持了白人样本和西班牙裔样本中饮食/体重量表的三因素结构。然而，三因素结构的弱不变性未得到支持。当对三个饮食/体重量表分别进行测量不变性分析时，追求瘦身量表是唯一显示出测量不变性的量表。
EDI饮食/体重量表的理论三因素结构在两个种族群体中均得到支持。此外，追求瘦身量表可随时用于对白人及西班牙裔女性的非临床样本进行组间比较，但研究人员在使用其他两个饮食/体重量表对这两组进行比较时应谨慎。
