英国成年人中饮食失调、身体变形障碍和体重偏见内化量表简版的验证
The validation of short eating disorder, body dysmorphia, and Weight Bias Internalisation Scales among UK adults.
作者信息
Lantos Dorottya, Moreno-Agostino Darío, Harris Lasana T, Ploubidis George, Haselden Lucy, Fitzsimons Emla
机构信息
UTS Business School, University of Technology Sydney, Ultimo, Australia.
Centre for Longitudinal Studies, Social Research Institute, UCL, London, UK.
出版信息
J Eat Disord. 2024 Sep 9;12(1):137. doi: 10.1186/s40337-024-01095-9.
BACKGROUND
When collecting data from human participants, it is often important to minimise the length of questionnaire-based measures. This makes it possible to ensure that the data collection is as engaging as possible, while it also reduces response burden, which may protect data quality. Brevity is especially important when assessing eating disorders and related phenomena, as minimising questions pertaining to shame-ridden, unpleasant experiences may in turn minimise any negative affect experienced whilst responding.
METHODS
We relied on item response theory to shorten three eating disorder and body dysmorphia measures, while aiming to ensure that the information assessed by the scales remained as close to that assessed by the original scales as possible. We further tested measurement invariance, correlations among different versions of the same scales as well as different measures, and explored additional properties of each scale, including their internal consistency. Additionally, we explored the performance of the 3-item version of the modified Weight Bias Internalisation Scale and compared it to that of the 11-item version of the scale.
RESULTS
We introduce a 5-item version of the Eating Disorder Examination Questionnaire, a 3-item version of the SCOFF questionnaire, and a 3-item version of the Dysmorphic Concern Questionnaire. The results revealed that, across a sample of UK adults (N = 987, ages 18-86, M = 45.21), the short scales had a reasonably good fit. Significant positive correlations between the longer and shorter versions of the scales and their significant positive, albeit somewhat weaker correlations to other, related measures support their convergent and discriminant validity. The results followed a similar pattern across the young adult subsample (N = 375, ages 18-39, M = 28.56).
CONCLUSIONS
These results indicate that the short forms of the tested scales may perform similarly to the full versions.
背景
在从人类参与者收集数据时，尽量缩短基于问卷的测量长度通常很重要。这使得确保数据收集尽可能有吸引力成为可能，同时还能减轻回答负担，这可能有助于保护数据质量。在评估饮食失调及相关现象时，简洁尤为重要，因为尽量减少与充满羞耻感、不愉快经历相关的问题，可能会相应减少回答时所体验到的任何负面影响。
方法
我们依靠项目反应理论来缩短三项饮食失调和身体畸形测量量表，同时旨在确保量表所评估的信息尽可能与原始量表所评估的信息相近。我们进一步测试了测量不变性、同一量表不同版本之间以及不同量表之间的相关性，并探索了每个量表的其他特性，包括它们的内部一致性。此外，我们还探索了修改后的体重偏见内化量表3项版本的表现，并将其与该量表11项版本的表现进行了比较。
结果
我们推出了饮食失调检查问卷的5项版本、SCOFF问卷的3项版本以及畸形关注问卷的3项版本。结果显示，在英国成年人样本（N =987，年龄18 - 86岁，M =45.21）中，这些简短量表的拟合度相当不错。量表较长版本和较短版本之间存在显著正相关，并且它们与其他相关测量量表也存在显著正相关，尽管相关性稍弱，这支持了它们的聚合效度和区分效度。在年轻成年人子样本（N =375，年龄18 - 39岁，M =28.56）中，结果呈现出类似的模式。
结论
这些结果表明，所测试量表的简短形式可能与完整版本表现相似。
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