Lee Stephanie W, Stewart Sunita M, Striegel-Moore Ruth H, Lee Sing, Ho Sai-yin, Lee Peter W H, Katzman Melanie A, Lam Tai-hing
Department of Community Medicine, The University of Hong Kong, Hong Kong, China.
Int J Eat Disord. 2007 Sep;40(6):569-74. doi: 10.1002/eat.20413.
We examined the psychometric properties of the Eating Disorder Diagnostic Scale (EDDS) in a community sample of Hong Kong school children.
Participants (359 boys and 387 girls), aged 12 to 19 years, were assessed on the EDDS on two occasions, one month apart. Factor structure, internal consistency, test-retest reliability, and validity against the Eating Disorders Examination-Questionnaire (EDE-Q) and Center for Epidemiological Studies-Depression (CES-D) were investigated.
Four groupings emerged on exploratory factor analysis: body dissatisfaction, bingeing behaviors, bingeing frequency, and frequency of compensatory behaviors. Items loaded on the same factors for boys and girls. Internal consistency for these factors was acceptable. Test-retest reliability was high for body dissatisfaction factor but weak to moderate for other factors and for diagnoses. High concurrent validity with the EDE-Q, and correlation with the CES-D was shown.
We offer preliminary reliability and validity evidence to support the further development of the EDDS as a screening instrument to assess eating disturbances in Hong Kong youth.
我们在香港学童的社区样本中检验了饮食失调诊断量表（EDDS）的心理测量特性。
对年龄在12至19岁之间的参与者（359名男孩和387名女孩）分两次进行EDDS评估，两次评估间隔一个月。研究了该量表的因子结构、内部一致性、重测信度，以及与饮食失调检查问卷（EDE-Q）和流行病学研究中心抑郁量表（CES-D）相比的效度。
探索性因子分析得出四个分组：身体不满、暴饮暴食行为、暴饮暴食频率和代偿行为频率。男孩和女孩的项目在相同因子上有载荷。这些因子的内部一致性可以接受。身体不满因子的重测信度较高，但其他因子和诊断的重测信度较弱至中等。该量表与EDE-Q有较高的同时效度，并与CES-D有相关性。
我们提供了初步的信度和效度证据，以支持进一步开发EDDS作为评估香港青少年饮食失调的筛查工具。
