Yuan Siyang, Freeman Ruth, Lahti Satu, Lloyd-Williams Ffion, Humphris Gerry
Dental Health Research Unit, Mackenzie Building, Ninewells Hospital, University of Dundee, UK.
Health Qual Life Outcomes. 2008 Mar 25;6:22. doi: 10.1186/1477-7525-6-22.
To assess the factorial structure and construct validity for the Chinese version of the Modified Dental Anxiety Scale (MDAS).
A cross-sectional survey was conducted in March 2006 from adults in the Beijing area. The questionnaire consisted of sections to assess for participants' demographic profile and dental attendance patterns, the Chinese MDAS and the anxiety items from the Hospital Anxiety and Depression Scale (HADS). The analysis was conducted in two stages using confirmatory factor analysis and structural equation modelling. Cross validation was tested with a North West of England comparison sample.
783 questionnaires were successfully completed from Beijing, 468 from England. The Chinese MDAS consisted of two factors: anticipatory dental anxiety (ADA) and treatment dental anxiety (TDA). Internal consistency coefficients (tau non-equivalent) were 0.74 and 0.86 respectively. Measurement properties were virtually identical for male and female respondents. Relationships of the Chinese MDAS with gender, age and dental attendance supported predictions. Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.
The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.
评估中文版改良牙科焦虑量表（MDAS）的因子结构和结构效度。
2006年3月对北京地区成年人进行了一项横断面调查。问卷包括评估参与者人口统计学特征和看牙模式的部分、中文版MDAS以及医院焦虑抑郁量表（HADS）中的焦虑项目。分析分两个阶段进行，采用验证性因子分析和结构方程模型。用英格兰西北部的比较样本进行交叉验证测试。
北京地区成功完成783份问卷，英格兰地区468份。中文版MDAS由两个因子组成：预期牙科焦虑（ADA）和治疗牙科焦虑（TDA）。内部一致性系数（tau非等效）分别为0.74和0.86。男性和女性受访者的测量属性几乎相同。中文版MDAS与性别、年龄和看牙情况之间的关系支持预测。HADS焦虑项目的两个子量表（负性情感和自主神经焦虑）与MDAS两个新确定因子之间的显著结构参数在比较样本中得到证实和重复。
中文版MDAS具有良好的心理测量学特性，能够简要评估总体牙科焦虑以及两个相关但不同的方面。
