September 2018

Volume 35, Issue 3

Confirmatory factor analysis of the health literacy in dentistry scale (HeLD) in the Australian population

Authors: X Ju DS Brennan E Parker S Chrisopoulos L Jamieson
doi: 10.1922/CDH_4325Ju08


Objective: 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. Methods: 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. Results: 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. Conclusions: 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). Key words: oral health literacy, construct validity, discriminative validity, reliability


Other articles in this issue

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A UK and Partisan view of Brexit and Dental Public Health 130-131 Download
Dental Public Health in Action: Putting oral health on the local public health agenda 132-135 Download
Dental Public Health In Action: Barriers to oral healthcare provision for older people in residential and nursing care homes: A mixed method evaluation and strategy development in County Durham, North East England 136-139 Download
Confirmatory factor analysis of the health literacy in dentistry scale (HeLD) in the Australian population 140-147 Download
The relationships among consumption of fruits, tooth loss and obesity 148-152 Download
School-based oral health education increases caries inequalities 153-159 Download
Social gradient in caries experience of Belgian adults 2010 160-166 Download
Patients’ willingness to pay for dental services in a population with limited restorative services 167-172 Download
Oral health behaviours and oral health-related dietary behaviours: The interrelationship and determinants by latent class analysis 173-178 Download
Depressive symptoms and untreated coronal dental caries among adults ages 21-64 years, NHANES 2013-2014 179-185 Download
Fluoride content of toothpastes available in South Africa 186-192 Download


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