Socioeconomic disparities of periodontitis in koreans based on the KNHANES IV

D. W. Kim, J. C. Park, Th T. Rim, Ui-Won Jung, ChangSung Kim, N. Donos, Inho Cha, Seongho Choi

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Objectives: The aim of this study was to identify the socioeconomic factors associated with the prevalence of periodontitis in Koreans. Methods: Cross-sectional data from 12 763 subjects, 15 years old and above, who underwent periodontal examinations were obtained from the Korean National Health and Nutrition Examination Survey IV (2007-209). Multivariate linear and logistic regression analyses were applied to estimate the association between socioeconomic indicators and prevalence of periodontitis. Results: A significant association was found between increasing age and periodontitis. Participants with higher income were less likely to have periodontitis (aOR = 0.9 and 95% CI = 0.78-0.98, and aOR = 0.7 and 95% CI = 0.60-0.80 in the middle and highest quintiles of monthly household income, respectively). In addition, participants living in rural areas were less likely to have periodontitis (aOR = 0.9 and 95% CI = 0.81-0.99), and current smokers were more likely to have periodontitis (aOR = 1.7 and 95% CI = 1.49-1.89). The analysis of comorbidities revealed that individuals with diabetes mellitus (DM) were significantly more likely to have periodontitis (aOR = 1.4 and 95% CI = 1.18-1.68). Conclusions: In a rapidly increasing Korean population, the lower socioeconomic groups as well as individuals with DM were significantly more likely to present with periodontitis.

Original languageEnglish
Pages (from-to)551-559
Number of pages9
JournalOral Diseases
Issue number6
Publication statusPublished - 2014 Jan 1


All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology
  • Dentistry(all)

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