Nagata Jason M, Otmar Christopher D, Kim Angela E, Compte Emilio J, Lavender Jason M, Brown Tiffany A, Forbush Kelsie T, Flentje Annesa, Lubensky Micah E, Lunn Mitchell R, Obedin-Maliver Juno
Department of Pediatrics, University of California, San Francisco, 550 16th Street, 4th Floor, Box 0503, San Francisco, San Francisco, CA, 94143, USA.
Eating Behavior Research Center, School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile.
J Eat Disord. 2025 May 14;13(1):83. doi: 10.1186/s40337-025-01277-z.
The Eating Pathology Symptoms Inventory (EPSI) is a questionnaire that assesses the severity of eating-disorder symptoms. This study aimed to examine the factor structure and measurement invariance of the EPSI in a large national U.S. sample of cisgender gay men and lesbian women.
The sample consisted of 1,498 cisgender sexual minority adults, including cisgender gay men (n = 925) and cisgender lesbian women (n = 573), who completed online self-report surveys. Using a split-half approach, exploratory factor analysis (EFA) was conducted in the first subset of each sample to identify underlying factor structures, followed by confirmatory factor analysis (CFA) to confirm model fit in the second subset of each sample. Multi-group confirmatory factor analysis (MG-CFA) was used to assess measurement invariance across the two sexual minority groups.
The EPSI eight-factor structure was supported across both cisgender sexual minority groups with strong model fit: cisgender gay men (CFI = 0.96, RMSEA = 0.04, SRMR = 0.06) and cisgender lesbian women (CFI = 0.94, RMSEA = 0.05, SRMR = 0.07). Measurement invariance analyses indicated that the EPSI was invariant across groups. Internal consistency, assessed using McDonald's omega, was acceptable for all scales (ωs = 0.75 to 0.95).
This study provides support for the utility of the EPSI in cisgender gay men and lesbian women populations, including measurement invariance that allows for meaningful comparisons across groups. Specifically, the EPSI performs reliably and consistently as a measure of eating pathology across adult cisgender gay men and cisgender lesbian women.
饮食病理学症状量表（EPSI）是一种用于评估饮食失调症状严重程度的问卷。本研究旨在在美国一个大型全国性的顺性别男同性恋者和女同性恋者样本中检验EPSI的因子结构和测量不变性。
样本包括1498名顺性别性少数成年人，其中顺性别男同性恋者（n = 925）和顺性别女同性恋者（n = 573），他们完成了在线自我报告调查。采用分半法，在每个样本的第一个子集中进行探索性因子分析（EFA）以确定潜在的因子结构，随后在每个样本的第二个子集中进行验证性因子分析（CFA）以确认模型拟合度。多组验证性因子分析（MG-CFA）用于评估两个性少数群体之间的测量不变性。
EPSI的八因子结构在两个顺性别性少数群体中均得到支持，模型拟合良好：顺性别男同性恋者（CFI = 0.96，RMSEA = 0.04，SRMR = 0.06）和顺性别女同性恋者（CFI = 0.94，RMSEA = 0.05，SRMR = 0.07）。测量不变性分析表明EPSI在不同群体间具有不变性。使用麦克唐纳ω系数评估的内部一致性在所有量表中均可接受（ωs = 0.75至0.95）。
本研究为EPSI在顺性别男同性恋者和女同性恋者群体中的效用提供了支持，包括测量不变性，这使得能够在不同群体之间进行有意义的比较。具体而言，EPSI作为成人顺性别男同性恋者和顺性别女同性恋者饮食病理学的一种测量方法，具有可靠且一致的表现。
