Ju X, Brennan D S, Parker E, Chrisopoulos S, Jamieson L
Australian Research Centre for Population Oral Health, Adelaide Dental School, University of Adelaide, Australia.
Community Dent Health. 2018 Aug 30;35(3):140-147. doi: 10.1922/CDH_4325Ju08.
To determine the psychometric properties of both the long- and short-form versions of the Health Literacy in Dentistry (HeLD) instrument in a large sample of the Australian adult population.
Data were from a subset of the National Dental Telephone Interview Survey 2013. Both the long (HeLD-29) and short-form (HeLD-14) were utilised, each of which comprises items from 7 conceptual domains: access, understanding, support, utilization, economic barriers, receptivity and communication. Confirmatory Factor Analysis was performed through structural equation modelling to determine factorial validity, where the Χ²/df, comparative fit, goodness of fit and root mean square error of approximation were used as indices of goodness of fit. Convergent validity was estimated from the average variance extracted (AVE) and composite reliability (CR), while internal consistency was estimated by Cronbach standardized alpha.
The dataset comprised 2,936 Australian adults aged 18+ years. The kurtosis and skewness values indicated an approximation to a normal distribution. Adequate fit was demonstrated for HeLD-14, but not for HeLD-29. Estimates of ≥ 0.50 for AVE and ≥ 0.70 for CR were demonstrated across all factors for both HeLD-29 and HeLD-14, indicating acceptable convergent validity for both forms. Discriminant validity was also demonstrated for both forms. Internal consistency was adequate in the seven conceptual domains for both HeLD forms, with Cronbach's alpha for all subscales being ≥0.70.
The psychometric properties of the HeLD instrument in a large sample of the Australian adult population were confirmed. The short form HeLD-14 was more parsimonious than the long-form (HeLD-29).
在澳大利亚成年人群的大样本中，确定牙科健康素养（HeLD）工具的长版和短版的心理测量特性。
数据来自2013年全国牙科电话访谈调查的一个子集。使用了长版（HeLD-29）和短版（HeLD-14），每个版本都包含来自7个概念领域的项目：获取、理解、支持、利用、经济障碍、接受度和沟通。通过结构方程模型进行验证性因素分析以确定因素效度，其中χ²/自由度、比较拟合度、拟合优度和近似均方根误差用作拟合优度指标。通过提取的平均方差（AVE）和组合信度（CR）估计收敛效度，而内部一致性通过克朗巴赫标准化阿尔法系数估计。
数据集包括2936名18岁及以上的澳大利亚成年人。峰度和偏度值表明近似正态分布。HeLD-14显示出充分拟合，但HeLD-29未显示。HeLD-29和HeLD-14的所有因素的AVE估计值≥0.50，CR估计值≥0.70，表明两种形式都具有可接受的收敛效度。两种形式也都显示出区分效度。HeLD两种形式在七个概念领域的内部一致性都足够，所有子量表的克朗巴赫阿尔法系数均≥0.70。
证实了HeLD工具在澳大利亚成年人群大样本中的心理测量特性。短版HeLD-14比长版（HeLD-29）更简洁。
