Remoteness-attributable financial inequality in dental service utilization in Australian older adults: A Blinder-Oaxaca decomposition
Files
(Published version)
Date
2025
Authors
Ghanbarzadegan, A.
Ju, X.
Sohn, W.
Jamieson, L.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Community Dentistry and Oral Epidemiology, 2025; 53(1):42-49
Statement of Responsibility
Arash Ghanbarzadegan, Xiangqun Ju, Woosung Sohn, Lisa Jamieson
Conference Name
Abstract
Objective: Oral health is often overlooked in ageing health issues, despite its impact on overall health and quality of life. Older Australians, especially those in rural and remote areas, face difficulties accessing oral health services. The aim of the study was to investigate the factors that contribute to financial barriers to accessing dental services among the ageing population in Australia in relation to their residential location. Method: The study included a weighted sample of Australian adults aged 65 years and over from a population-based survey called the National Study of Adult Oral Health (NSAOH) conducted in 2017–18. Descriptive analysis was conducted and generated cross-tabulation tables to investigate the distributions of the outcome, exposure and covariates, including Sex, Education level (the highest level of education), Equivalised household income, Dental insurance, Concession card ownership, Difficulty paying a dental bill and last dental visit. Blinder-Oaxaca decomposition counterfactual analysis was used to explore the potential impact of a person's residence on their financial difficulty accessing dental services. Results: The findings showed that 26.2% (95% CI: 24.3–29.3) of major city residents and 30.1% (95% CI: 26.9–33.3) of rural residents avoided or delayed dental visits due to cost. The decomposition analysis indicated that 53.8% of the disparities in the prevalence of avoided or delayed dental visits due to cost were explained by the selected variables, while 46.2% remained unexplained. The explanatory variable with the largest contribution was difficulty paying a $200 dental bill, accounting for 62.4% of the differences, followed by dental insurance, last dental visit and equivalised household income, which explained 42.1%, 20.8% and 14.9% of the differences, respectively. Conclusion: Regional/remote populations experience more financial barriers to accessing dental care than major city populations and the identified factors explain a significant proportion of these disparities. Based on the study findings, recommendations include expanding public dental service coverage, evaluating concession card mechanisms and advocating for regular dental visits to mitigate disparities in dental care access.
School/Discipline
Dissertation Note
Provenance
Description
First published: 18 August 2024
Access Status
Rights
© 2024 The Author(s). Community Dentistry and Oral Epidemiology published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.