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Factorial integrity and validation of the Eating Pathology Symptoms Inventory (EPSI)

机译：阶乘完整性和验证吃病理学症状库存（EPSI）

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The Eating Pathology Symptoms Inventory (EPSI) is a 45-item self-report measure of eating pathology designed to be sensitive in assessing symptoms among diverse populations of individuals with disordered eating. The current study represents the first external validation of the EPSI as well as the first to examine the factor structure in an outpatient eating disorder clinic sample. We conducted an exploratory factor analysis in three separate samples: an outpatient clinic sample (n = 284), a college sample (n = 296), and a community sample (n = 341) and compared the observed factor structures to the original 8-factor solution proposed by Forbush et al. (2013). We also investigated whether the subscales correlated with the Eating Disorder Examination Questionnaire (EDE-Q) and a clinical impairment measure among the outpatient clinic sample. Results suggested between 7 and 8 factors for each of the three samples. Our findings largely replicated those of the original EPSI development study, excepting some deviations in the Muscle Building, Cognitive Restraint, and Excessive Exercise subscales. However, confirmatory factor analysis and exploratory structural equation modeling produced poor model fit, which may be related to the item heterogeneity within many of the subscales. Finally, eating disorder attitudes and behaviors assessed by the EPSI were significantly correlated with the EDE-Q and with clinical impairment. Overall, our results highlight both strengths and limitations of the EPSI. Findings provide preliminary support for the use of the EPSI among research with diverse populations, and present several avenues for future research for enhancing clinical utility.
机译：吃病理学症状库存（EPSI）是一种45项自我报告的食用病理学措施，旨在对评估饮食无序患者的各种人群的症状来敏感。目前的研究代表了EPSI的第一个外部验证以及第一个检查门诊进食障碍诊所样品中的因子结构。我们在三种单独的样品中进行了探索性因子分析：门诊临床样本（n = 284），大学样本（n = 296）和社区样本（n = 341），并将观察到的因子结构与原始的8-相比Forbush等人提出的因子解决方案。 （2013）。我们还调查了该子级是否与进食障碍检查问卷（EDE-Q）相关和门诊诊所样品中的临床损伤措施。结果表明，三种样品中的每一个的7至8个因素。我们的研究结果在很大程度上复制了原来的EPSI开发研究的研究，除了肌肉建设，认知克制和过度运动分量的一些偏差。然而，确认的因子分析和探索性结构方程模型产生的模型适合差，这可能与许多分量器内的物品异质性有关。最后，EPSI评估的饮食失调态度和行为与EDE-Q和临床损害显着相关。总体而言，我们的结果突出了EPSI的优势和局限性。调查结果提供了对各种人口研究的研究中使用EPSI的初步支持，并为提高临床公用事业的未来研究提供了几个途径。

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