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Zi-lan Wang 2 Articles
Inequality in dental flossing behavior among Korean adults based on household income levels
Zi-Lan Wang, Eun-Jae Choi, Seung-Hee Ryu, Seon-Jip Kim, Hyun-Jae Cho
Epidemiol Health. 2024;e2024052.   Published online May 24, 2024
DOI: https://doi.org/10.4178/epih.e2024052    [Accepted]
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  • 32 Download
AbstractAbstract PDF
Abstract
OBJECTIVES
The aim of this study was to estimate the association between household income and dental flossing.
METHODS
This cross-sectional study investigated the impact of household income on flossing among 9,391 adults aged 30+ with ≥20 natural teeth, utilizing data from the seventh Korea National Health and Nutrition Examination Survey (2016-2018). Outcome measures included flossing (yes/no), with income categorized into 4 levels: lowest, medium to low, medium to high, and highest. Logistic regression, adjusted for age, gender, brushing frequency, recent dental exams, periodontitis, smoking, and alcohol use, was employed to evaluate the influence of socioeconomic status on oral hygiene practices.
RESULTS
In the highest income group, flossing was 62.6% more prevalent than in the lowest income group (adjusted odds ratio [aOR], 1.63; 95% CI, 1.27-2.08). The strongest association between income levels and flossing was observed in individuals aged ≥70 years (aOR, 3.64; 95% CI, 1.86-7.11), with a decreasing strength of association in the 60s (aOR, 1.72; 95% CI, 1.05-2.84) and 50s age groups (aOR, 1.69; 95% CI, 1.07-2.68). Higher-income women demonstrated a higher frequency of flossing than their lower-income counterparts (aOR, 1.67; 95% CI, 1.24-2.23). Higher-income individuals without periodontitis were more likely to floss (aOR, 1.64; 95% CI, 1.23-2.18), and among those with periodontitis, flossing was significantly associated only with the highest income category (aOR, 1.64; 95% CI, 1.10-2.44).
CONCLUSIONS
The findings of this study indicate a significant correlation between higher household income levels and an increased prevalence of flossing.
Summary
Effects of multigrain rice and white rice on periodontitis: an analysis using data from the Korea National Health and Nutrition Examination Survey 2012-2015
Seung-Hee Ryu, Zi-lan Wang, Seon-Jip Kim, Hyun-Jae Cho
Epidemiol Health. 2023;45:e2023063.   Published online July 3, 2023
DOI: https://doi.org/10.4178/epih.e2023063
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  • 120 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract AbstractSummary PDF
Abstract
OBJECTIVES
Numerous studies have investigated the efficacy of whole grains; however, research on multigrain remains limited. Grains exhibit combined positive effects against various diseases. The purpose of this study was to examine the impact of multigrain and white rice consumption on periodontitis.
METHODS
We analyzed data from the Korea National Health and Nutrition Examination Survey V-3 and VI, collected between 2012 and 2015, which included 12,450 patients (4,859 male and 7,591 female) aged 19-64 years. The World Health Organization’s Community Periodontal Index (CPI) was utilized to assess the presence of periodontitis, with periodontitis defined as a CPI index score of ≥3. Multivariable logistic regression analysis was performed after adjusting for potential confounding variables.
RESULTS
The group that consumed only multigrain rice was less likely to have periodontitis than the group that consumed only white rice (odds ratio [OR], 0.80; 95% confidence interval [CI], 0.69 to 0.93). When stratified by sex, the risk of periodontitis demonstrated a 24% decrease in female who consumed only multigrain rice (OR, 0.76; 95% CI, 0.62 to 0.93). A similar result was observed in the age group of 40-64 years (OR, 0.84; 95% CI, 0.71 to 0.99). In the diabetes stratification model, the normal group that consumed only multigrain rice exhibited a 25% decrease in the odds of periodontitis (OR, 0.75; 95% CI, 0.62 to 0.91).
CONCLUSIONS
Our findings suggest that the prevalence of periodontitis may vary depending on the type of rice consumed.
Summary
Korean summary
본 연구에서는 우리나라의 대규모 자료를 이용하여 쌀 섭취 종류가 치주염 위험에 미치는 영향을 살펴보았다. 우리의 연구 결과는 잡곡밥을 매일 2회 이상 섭취하는 것이 흰쌀밥을 먹는 것보다 치주염 예방에 더 효과적이라는 것을 보여준다. 이러한 결과는 당뇨병이 있는 사람에 비해 건강한 사람, 남성보다는 여성, 40~64세에서 더 큰 예방 효과를 시사한다.
Key Message
In this study, we examined the impact of different types of rice consumption on the risk of periodontitis using large-scale data from Korea. The group that consumed only multigrain rice was less likely to have periodontitis than the group that consumed only white rice (odds ratio [OR]=0.80; 95% confidence interval [CI], 0.69–0.93). The risk of periodontitis was reduced by 24% in female who consumed only multigrain rice, 16% decrease in the 40–64 age group, and in the diabetic stratification model, the normal group who consumed only multigrain rice had a 25% decrease in periodontitis risk.

Citations

Citations to this article as recorded by  
  • Trends and Characteristics of Brown Rice Consumption among Adults in Japan: An Analysis of the National Health and Nutrition Surveys, 2012–2019
    Nayu Ikeda, Miwa Yamaguchi, Nobuo Nishi
    Nutrients.2024; 16(10): 1473.     CrossRef

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