A study on trends of dental caries disparities according to household income level of children and adolescents using data from the Korea National Health and Nutrition Examination Survey

Abstract

Objectives:The purpose of this study is to investigate the trend of dental caries inequalities according to the household income level of children and adolescents, using data from Wave 4 (2007Wave 4 ( -2009 to Wave 7 (2016Wave 7 ( -2018 of the Korea National Health and Nutrition Examination Survey (KNHANES). Methods: The raw data were obtained from the website of KNHANES. The data by year within each wave were integrated and used for the analysis. In accordance with the guidebook for data users, the experience rate and prevalence rate of dental caries in primary and permanent teeth were estimated. Additionally, the absolute difference (AD) between the lowest and highest household income levels and the prevalence ratio (PR) by household income level were calculated. Results:The AD in the experience rate of dental caries showed a tendency to marginally decrease in primary teeth and moderately increase in permanent teeth. The PR was not statistically significant (P＞0.05) in all waves. The AD in the prevalence rate of dental caries decreased by 5.4% and 8.2% in primary and permanent teeth, respectively. The PR in Wave 7 showed that all statistical significance disappeared (P＞0.05). Conclusions: In Korean children and adolescents, dental caries inequalities by household income level showed a tendency to gradually decrease in primary or permanent teeth, and statistical significance was no longer confirmed.

Multilevel Analysis on Spatial Distribution and Socio-Environmental Factors of Dental Caries in Korean Children

“…However, recent studies have reported contradictory results. The study on dental caries disparities by household income level by Jung [30] analyzed data spanning the 4th through 7th National Health and Nutrition Examination Surveys and found no significant difference in dental caries prevalence across household income levels, and no clear disparities could be discerned. The results of our study reported that there is no difference in the prevalence of dental caries based on income levels by region, as well as that the economic status of the metropolitan level of the region does not affect the prevalence of dental caries in the county level of the region.…”

The analysis of the risk factors for dental caries in Korean children and adolescents: a cross-sectional study

“…이 지침 10) 에 따르면 치아우식의 치료 필요 정도를 평가한 임상적 요인과 더불어 예방적 치과 이용, 칫솔질, 불소치약 사 용, 단맛 간식•음료 섭취 등 생활습관 요인의 개별항목을 기준에 따라 안전, 주의, 위험으로 판정하고 이를 종합하여 개인의 우식 위험도를 낮음, 보통, 높음으로 판정한다. 그런데 아동의 치아우식 위험요인에 대한 국내 근거 자료는 고위험군 [11][12][13] 대상이거나 칫솔질 14) , 가구소득 수준 15) 료만을 누리집을 통해 제공한다 16) . 저자는 2023년 3월에 국민건강영 양조사 누리집 17) 3).…”

Analysis of inequality trends in dental caries, deep periodontal pockets, and severe tooth loss according to income level of adults using data from the Korea National Health and Nutrition Examination Survey

“…까지의 국민건강영양조사 자료를 분석하여 한국인의 구강건강 불평등 의 전체적인 추이를 파악하기 위한 일련의 연구를 계획하였고, 아동• 청소년의 소득수준에 따른 치아우식 불평등 추이 보고 21) 에 이어 성인 의 소득수준에 따른 치아우식, 깊은 치주낭, 다수 치아 상실의 불평등 추이를 두 번째 결과물로써 보고하고자 한다.…”