Development and Validation of the Eating Loss of Control Scale
Development and Validation of the Eating Loss of Control Scale
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DOI：
10.1037/a0034729
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发表时间：
2014-03-01
影响因子：
3.6
通讯作者：
Grilo, Carlos M.
中科院分区：
文献类型：
--
作者：
Blomquist, Kerstin K.;Roberto, Christina A.;Grilo, Carlos M.
反复客观暴食发作(OBE)是暴食障碍(Bed)和神经性暴食症(BN)的典型诊断特征。OBE的特点是在进食异常大量的食物时出现失控(LOC)。尽管病因学上的重要性和患者之间复杂的异质性，LOC的测量已经被分成两类进行评估(有无)。本研究描述了进食失控量表(ELOCS)的编制和初步验证，ELOCS是一份自我报告问卷，旨在检验LOC结构的复杂性。研究对象为168名有床的肥胖求诊者，完成进食障碍检查、访谈和自我报告测量。参与者在连续的Likert类型量表上对他们与LOC相关的感觉或行为进行评级，并报告在过去28天内LOC发作的次数。主成分分析确定了一个由18个条目组成的单因素量表，该量表显示出良好的内部信度(α=0.90)。LOC发作频率与OBE频率和主观暴食性发作显著相关。ELOCS表现出良好的收敛效度，与进食病理更严重、情绪失调更严重、抑郁更严重、自我控制力较低但与体重指数无关。研究结果表明，ELOCS是一个有效的自我报告问卷，可以为肥胖者卧床时的LOC经历提供重要的临床信息。未来的研究应该检查其他饮食障碍和非临床样本中的ELOCS。
Recurrent objective bulimic episodes (OBE) are a defining diagnostic characteristic of binge eating disorder (BED) and bulimia nervosa (BN). OBEs are characterized by experiencing loss of control (LOC) while eating an unusually large quantity of food. Despite nosological importance and complex heterogeneity across patients, measurement of LOC has been assessed dichotomously (present/absent). This study describes the development and initial validation of the Eating Loss of Control Scale (ELOCS), a self-report questionnaire that examines the complexity of the LOC construct. Participants were 168 obese treatment-seeking individuals with BED who completed the Eating Disorder Examination interview and self-report measures. Participants rated their LOC-related feelings or behaviors on continuous Likert-type scales and reported the number of LOC episodes in the past 28 days. Principal component analysis identified a single-factor, 18-item scale, which demonstrated good internal reliability (alpha = .90). Frequency of LOC episodes was significantly correlated with frequency of OBEs and subjective bulimic episodes. The ELOCS demonstrated good convergent validity and was significantly correlated with greater eating pathology, greater emotion dysregulation, greater depression, and lower self-control but not with body mass index. The findings suggest that the ELOCS is a valid self-report questionnaire that may provide important clinical information regarding experiences of LOC in obese persons with BED. Future research should examine the ELOCS in other eating disorders and nonclinical samples.