Abrahamsson Kajsa H, Ohrn Kerstin, Hakeberg Magnus
Department of Periodontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Eur J Oral Sci. 2009 Dec;117(6):720-7. doi: 10.1111/j.1600-0722.2009.00684.x.
The aim of this study was to investigate the factor structure of the revised dental beliefs survey (DBS-R) in a group of regular dental patients. The study group consisted of 278 patients (mean age 54 yr), 61% of whom were women. The DBS-R item mean value was 1.6. Principal component analysis (PCA) and confirmatory factor analysis (CFA) were performed. The initial PCA among the 28 DBS-R items showed four factors with eigenvalues of > 1 explaining 67% of the total variance. Five different CFA models were tested. The final model revealed a four-factor solution with one second-order factor (i.e. a hierarchical CFA). Thus, the latent second-order variable, 'dental beliefs', explains the variance from all DBS-R items through the four first-order factors labeled 'ethics', 'belittlement', 'communication and empathy', and 'control and anxiety'. The results suggest a somewhat different factor structure of DBS-R than previously reported for dental-fear patients. Hence, the underlying factor structure of the DBS-R may differ between different patient groups. The results point towards the use of the original 28-item DBS-R and interpreting the scale as measuring an overall construct of 'dental beliefs' and thus patients' attitudes and feelings related to dentists and dentistry.
本研究旨在调查一组普通牙科患者中修订版牙科信念调查问卷（DBS-R）的因子结构。研究组由278名患者组成（平均年龄54岁），其中61%为女性。DBS-R项目的均值为1.6。进行了主成分分析（PCA）和验证性因子分析（CFA）。对28个DBS-R项目进行的初始主成分分析显示有四个因子，其特征值大于1，解释了总方差的67%。测试了五种不同的验证性因子分析模型。最终模型显示为一个四因子解决方案，带有一个二阶因子（即层次验证性因子分析）。因此，潜在的二阶变量“牙科信念”通过标记为“道德规范”“轻视”“沟通与同理心”以及“控制与焦虑”的四个一阶因子解释了所有DBS-R项目的方差。结果表明，DBS-R的因子结构与先前针对牙科恐惧患者报告的结构略有不同。因此，DBS-R的潜在因子结构可能在不同患者群体之间存在差异。结果表明应使用原始的28项DBS-R，并将该量表解释为测量“牙科信念”这一整体结构，从而衡量患者对牙医和牙科治疗的态度及感受。
