Centre for Obesity Research and Education, Monash University, Victoria, Australia.
Obes Surg. 2010 Apr;20(4):432-9. doi: 10.1007/s11695-009-9977-5. Epub 2009 Sep 18.
The Beck Depression Inventory (BDI) is frequently employed as measure of depression in studies of obesity. The aim of the study was to assess the factorial structure of the BDI in obese patients prior to bariatric surgery.
Confirmatory factor analysis was conducted on the current published factor analyses of the BDI. Three published models were initially analysed with two additional modified models subsequently included. A sample of 285 patients presenting for Lap-Band surgery was used.
The published bariatric model by Munoz et al. was not an adequate fit to the data. The general model by Shafer et al. was a good fit to the data but had substantial limitations. The weight loss item did not significantly load on any factor in either model. A modified Shafer model and a proposed model were tested, and both were found to be a good fit to the data with minimal differences between the two. A proposed model, in which two items, weight loss and appetite, were omitted, was suggested to be the better model with good reliability.
The previously published factor analysis in bariatric candidates by Munoz et al. was a poor fit to the data, and use of this factor structure should be seriously reconsidered within the obese population. The hypothesised model was the best fit to the data. The findings of the study suggest that the existing published models are not adequate for investigating depression in obese patients seeking surgery.
贝克抑郁量表（BDI）常用于肥胖症研究中的抑郁测量。本研究旨在评估肥胖患者在接受减重手术前贝克抑郁量表的因子结构。
对贝克抑郁量表当前已发表的因子分析进行验证性因子分析。最初分析了三种已发表的模型，随后又纳入了两种额外的修正模型。使用了 285 名接受腹腔镜带手术的患者样本。
Munoz 等人发表的肥胖模型与数据拟合不佳。Shafer 等人的通用模型与数据拟合良好，但存在较大的局限性。体重减轻项目在两个模型中均未显著加载到任何因子上。对修正的 Shafer 模型和提出的模型进行了测试，发现两者与数据拟合良好，两者之间差异极小。提出了一个模型，其中两个项目，体重减轻和食欲，被省略，建议是具有良好可靠性的更好模型。
Munoz 等人之前在肥胖症患者候选者中发表的因子分析与数据拟合不佳，应在肥胖人群中认真重新考虑使用这种因子结构。假设模型与数据拟合最好。研究结果表明，现有的发表模型不足以调查寻求手术的肥胖患者的抑郁情况。
