Department of Preventive Dentistry, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
BMC Oral Health. 2022 May 31;22(1):215. doi: 10.1186/s12903-022-02246-7.
The aim of this study was to assess the income-related inequality of edentulism among the aged in China and identify the contributing factors.
A secondary analysis of data from the 4th National Oral Health Epidemiology Survey in China was conducted, and 65-74 years old were selected for the analysis of income-related inequality of edentulism. The concentration curve, Concentration index (CI) and Erreygers-corrected concentration index (EI) were used to represent inequality and its degree qualitatively and quantitatively, respectively. A decomposition method based on probit model was employed to determine the contributors of inequality, including demographic factors, income status, oral health-related knowledge, attitude and practices and self-perceived general health status.
In China, aged people with edentulism were concentrated in the poor. The CI was - 0.2337 (95% CIs: - 0.3503, - 0.1170). The EI was - 0.0413 (95% CIs: - 0.0619, - 0.0207). The decomposition results showed that income (75.02%) and oral health-related knowledge, attitude and practices (15.52%) were the main contributors to the inequality.
This study showed that pro-poor inequality among the elderly with edentulism existed in China. Corresponding policies against the contributors could be considered to promote the health equality of the elders.
本研究旨在评估中国老年人无牙颌与收入相关的不平等程度，并确定其影响因素。
对中国第四次全国口腔健康流行病学调查的数据进行二次分析，选择 65-74 岁人群分析无牙颌与收入相关的不平等。采用集中曲线、集中指数（CI）和 Erreygers 校正集中指数（EI）定性和定量地表示不平等及其程度。采用基于概率模型的分解方法确定不平等的贡献因素，包括人口统计学因素、收入状况、口腔健康相关知识、态度和行为以及自我感知的一般健康状况。
在中国，无牙颌老年人集中在贫困人口中。CI 为-0.2337（95%CI：-0.3503，-0.1170）。EI 为-0.0413（95%CI：-0.0619，-0.0207）。分解结果表明，收入（75.02%）和口腔健康相关知识、态度和行为（15.52%）是不平等的主要贡献因素。
本研究表明，中国老年人无牙颌存在有利于贫困人口的不平等。可以考虑针对这些贡献因素制定相应政策，以促进老年人的健康公平。
