Psychometric evaluation of the Muscle Dysmorphic Disorder Inventory (MDDI) among cisgender gay men and cisgender lesbian women,Body Image

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Psychometric evaluation of the Muscle Dysmorphic Disorder Inventory (MDDI) among cisgender gay men and cisgender lesbian women
Body Image ( IF 5.2 ) Pub Date : 2021-05-04 , DOI: 10.1016/j.bodyim.2021.04.008
Emilio J Compte ₁ , Chloe J Cattle ₂ , Jason M Lavender ₃ , Stuart B Murray ₄ , Tiffany A Brown ₅ , Matthew R Capriotti ₆ , Annesa Flentje ₇ , Micah E Lubensky ₈ , Juno Obedin-Maliver ₉ , Mitchell R Lunn ₁₀ , Jason M Nagata ₂

Affiliation

Eating Behavior Research Center, School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile; Research Department, Comenzar de Nuevo Treatment Center, Monterrey, Mexico.
Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA.
Military Cardiovascular Outcomes Research Program (MiCOR), Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA; The Metis Foundation, San Antonio, TX, USA.
Department of Psychiatry and Behavioral Sciences, University of Southern California, Los Angeles, CA, USA.
Department of Psychiatry, University of California, San Diego, CA, USA; San Diego State University Research Foundation, San Diego, CA, USA.
Department of Psychology, San José State University, San Jose, CA, USA; The PRIDE Study/PRIDEnet, Stanford University School of Medicine, Stanford, CA, USA.
Department of Community Health Systems, University of California, San Francisco, San Francisco, CA, USA; Alliance Health Project, Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, USA; The PRIDE Study/PRIDEnet, Stanford University School of Medicine, Stanford, CA, USA.
The PRIDE Study/PRIDEnet, Stanford University School of Medicine, Stanford, CA, USA; Department of Community Health Systems, University of California, San Francisco, San Francisco, CA, USA.
The PRIDE Study/PRIDEnet, Stanford University School of Medicine, Stanford, CA, USA; Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA, USA; Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA.
The PRIDE Study/PRIDEnet, Stanford University School of Medicine, Stanford, CA, USA; Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA; Division of Nephrology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.

Despite increasing empirical interest in muscle dysmorphia (MD), a dearth of research has assessed this construct in sexual minority populations. In particular, the psychometric properties of one of the most widely used measures of MD symptoms—the Muscle Dysmorphic Disorder Inventory (MDDI)—have not been evaluated in sexual minority populations despite emerging evidence suggesting differential risk for MD symptoms across sexual orientation groups. In this study, we assessed the psychometric properties of the MDDI in a sample of 715 cisgender gay men and 404 cisgender lesbian women ages 18–50 years who participated in a large-scale national longitudinal cohort study of sexual and gender minority adults. The factor structure of the MDDI was examined in each sample using a two-step, split-sample exploratory and confirmatory factor analytic approach. Exploratory factor analysis supported a three-factor structure in both samples, which were confirmed by confirmatory factor analysis. Moreover, results supported the internal consistency reliability and convergent validity of the MDDI subscales in both samples. Cumulatively, these findings suggest that the MDDI is an appropriate measure of MD symptoms among cisgender gay men and cisgender lesbian women.

中文翻译：

顺性别男同性恋者和顺性别女同性恋者肌肉畸形障碍量表（MDDI）的心理测量评估

尽管人们对肌肉畸形（MD）的实证兴趣日益浓厚，但缺乏对性少数人群中这种结构进行评估的研究。特别是，最广泛使用的 MD 症状测量之一——肌肉变形障碍量表 (MDDI)——的心理测量特性尚未在性少数群体中进行评估，尽管新的证据表明不同性取向群体的 MD 症状风险存在差异。在这项研究中，我们以 715 名年龄在 18-50 岁的顺性别男同性恋者和 404 名顺性别女同性恋者为样本，评估了 MDDI 的心理测量特性，这些样本参与了一项针对性少数和性别少数成年人的大规模全国纵向队列研究。使用两步、分割样本探索性和验证性因素分析方法检查每个样本的 MDDI 因素结构。探索性因素分析支持两个样本的三因素结构，并通过验证性因素分析得到证实。此外，结果支持两个样本中 MDDI 子量表的内部一致性信度和收敛效度。总的来说，这些发现表明 MDDI 是衡量顺性别男同性恋和顺性别女同性恋的 MD 症状的适当指标。

更新日期：2021-05-05

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