香港华人少女进食障碍问卷的信度、效度与常模

Psychometric Properties and Normative Data of Eating Disorder Inventory Among Chinese Adolescent Girls in Hong Kong

目的:考察进食障碍问卷(EatingDisorderInventory,EDI)用于调查香港华人少女的心理测量学指标,并建立华人少女的年龄常模。方法:采用EDI对2256名12至18岁的香港中学女生进行调查,采用项目-总体相关、同质信度、结构效度等指标对EDI进行评定。结果:除8个项目外,项目-总体相关均高于0.30;EDI的α系数介于0.68到0.87;因素分析显示,按照特征根大于1的标准,提取出8个公因子,8个因子的累计贡献率为43.9%,符合原问卷的构想;组间比较分析揭示了进食障碍分量表得分的年龄和区域的显著差异。结论:进食障碍问卷是一种可靠、有效的评估进食障碍行为及相关心理特性的测查工具,本研究提供的华人少女特定年龄常模也为该问卷的应用提供了可靠的基础。

Objective: The present study examined the psychometric properties of the Eating Disorder Inventory among Chinese adolescent girls in Hong Kong. We also attempted to establish age-specific norms for the EDI among Chinese adolescent girls of a broad age range. Methods: 2256 adolescent girls between the age of 12 and 18 years participated in this study. Results: The internal consistency estimates for the eight EDI scales were in the acceptable range, with alpha ranging from .68 for Perfectionism to .87 for Body Dissatisfaction. With the exception of a few items, the item-total correlations were also acceptable for the eight scales. Findings of the principal components analysis support the original eight clinically derived EDI constructs. Group comparison analyses reveal significant age differences and race differences in several EDI scales. EDI percentile scores are presented for girls 12-13 and 14-18 years of age in the present study. Conclusion: This study provides further empirical support to the transcultural validity of the EDI. It also highlights the importance of establishing age- and race- specific norms for the inventory.