Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut.
Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut.
Surg Obes Relat Dis. 2019 Oct;15(10):1829-1835. doi: 10.1016/j.soard.2019.06.039. Epub 2019 Jul 8.
Assessing the complexities of eating behaviors in patients who undergo bariatric surgery is challenging. The Eating Loss of Control Scale (ELOCS), a measure of loss-of-control (LOC) eating, has not yet been evaluated psychometrically among bariatric surgery patients.
This study presents a psychometric examination of the ELOCS in postoperative bariatric surgery patients.
Academic medical center in the United States.
One hundred seventy-one postbariatric treatment-seeking adults (82.5% female, 52.4% white) with LOC eating completed the ELOCS and measures assessing eating psychopathology and mood. Confirmatory factor analysis (CFA) was used to test fit for a 1-factor solution. Exploratory factor analysis (EFA) examined alternative factor structures.
CFA revealed poor fit for a 1-factor structure (χ = 220.375, degrees of freedom = 135, P < .001, comparative fit index = .917, Tucker-Lewis index = .906, root mean square error of approximation = .067). EFA data suggested an alternative factor solution (χ = 157.76, degrees of freedom = 118, P = .009, comparative fit index = .965, Tucker-Lewis index = .955, root mean square error of approximation = .047). Factor 1 (α = .88) reflected behavioral aspects and factor 2 (α = .92) reflected cognitive/emotional aspects of LOC eating. Bivariate correlations with measures of eating and other psychopathology suggested good construct validity for factors.
Findings suggest possible differences in the construct validity of the ELOCS among postbariatric patients. The 1-factor solution previously supported in clinical and nonclinical groups demonstrated poor fit. EFA revealed a possible alternative 2-factor solution that aligns with emerging literature, suggesting that LOC eating presents differently in postbariatric patients. Researchers interested in LOC eating among bariatric patients should consider use of the ELOCS and testing the proposed alternative factor structure.
评估接受减重手术患者的饮食行为复杂性具有挑战性。饮食失控量表（ELOCS）是一种衡量失控饮食（LOC）的测量工具，但尚未在减重手术患者中进行心理测量学评估。
本研究对术后减重手术患者的 ELOCS 进行心理测量学检查。
美国学术医疗中心。
171 名接受减重治疗的成年人（82.5%为女性，52.4%为白人）完成了 ELOCS 以及评估饮食心理病理学和情绪的测量。验证性因子分析（CFA）用于测试 1 因素解决方案的拟合度。探索性因子分析（EFA）检验了替代因素结构。
CFA 显示 1 因素结构的拟合度较差（χ=220.375，自由度=135，P<0.001，比较拟合指数=0.917，塔克-刘易斯指数=0.906，均方根误差逼近=0.067）。EFA 数据表明存在替代因素解决方案（χ=157.76，自由度=118，P=0.009，比较拟合指数=0.965，塔克-刘易斯指数=0.955，均方根误差逼近=0.047）。因素 1（α=0.88）反映了行为方面，因素 2（α=0.92）反映了 LOC 饮食的认知/情绪方面。与饮食和其他心理病理学测量的双变量相关性表明，因素具有良好的结构效度。
研究结果表明，ELOCS 在减重后患者中的结构有效性可能存在差异。先前在临床和非临床人群中得到支持的 1 因素解决方案表现出较差的拟合度。EFA 显示出可能的替代 2 因素解决方案，与新兴文献一致，表明 LOC 饮食在减重后患者中的表现不同。对减重患者的 LOC 饮食感兴趣的研究人员应考虑使用 ELOCS 并测试提出的替代因素结构。
