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Decomposing Socioeconomic Inequality in Dental Caries in Iran: Cross-Sectional Results From the Persian Cohort Study Publisher



Najafi F1 ; Rezaei S1 ; Hajizadeh M2 ; Soofi M3 ; Salimi Y3 ; Kazemi Karyani A1 ; Soltani S1 ; Ahmadi S4 ; Homaie Rad E5 ; Karami Matin B1 ; Pasdar Y1 ; Hamzeh B1 ; Nazar MM1 ; Mohammadi A6 Show All Authors
Authors
  1. Najafi F1
  2. Rezaei S1
  3. Hajizadeh M2
  4. Soofi M3
  5. Salimi Y3
  6. Kazemi Karyani A1
  7. Soltani S1
  8. Ahmadi S4
  9. Homaie Rad E5
  10. Karami Matin B1
  11. Pasdar Y1
  12. Hamzeh B1
  13. Nazar MM1
  14. Mohammadi A6
  15. Poustchi H7
  16. Motamedgorji N7
  17. Moslem A8
  18. Khaleghi AA9
  19. Fatthi MR10
  20. Aghazadehattari J11
  21. Ahmadi A12
  22. Pourfarzi F13
  23. Somi MH14
  24. Sohrab M15
  25. Ansarimoghadam A16
  26. Edjtehadi F10
  27. Esmaeili A17
  28. Joukar F18
  29. Lotfi MH19
  30. Aghamolaei T20
  31. Eslami S21
  32. Tabatabaee SHR22
  33. Saki N23
  34. Haghdost AA24
Show Affiliations
Authors Affiliations
  1. 1. Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
  2. 2. School of Health Administration, Faculty of Health, Dalhousie University, Halifax, Canada
  3. 3. Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
  4. 4. Department of Social Welfare Management, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
  5. 5. Social Determinants of Health Research Center, Guilan University of Medical Sciences, Rasht, Iran
  6. 6. Department of Health Information Technology, Paramedical School, Kermanshah University of Medical Sciences, Kermanshah, Iran
  7. 7. Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  8. 8. Department of Anesthesiology, Sabzevar University of Medical Sciences, Sabzevar, Iran
  9. 9. Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
  10. 10. Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
  11. 11. Social Determinants of Health Research Center, Urmia Jundishapur University of Medical Sciences, Urmia, Iran
  12. 12. Modeling in Health Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
  13. 13. Digestive Disease Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
  14. 14. Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
  15. 15. Diabetes Research Cente, Mazandaran University of Medical Sciences, Sari, Iran
  16. 16. Health Promotion Research Center, Zahedan Jundishapur University of Medical Sciences, Zahedan, Iran
  17. 17. Department of Cardiology, Medical School, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
  18. 18. Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
  19. 19. Shahid Sadoghi University of Medical Sciences, Yazd, Iran
  20. 20. Department of Public Health, School of Public Health, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
  21. 21. Pharmaceutical Research Center, Pharmaceutical Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
  22. 22. Research Center for Health Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
  23. 23. Hearing Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  24. 24. Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

Source: Archives of Public Health Published:2020


Abstract

Background: The current study aimed to measure and decompose socioeconomic-related inequalities in DMFT (decayed, missing, and filled teeth) index among adults in Iran. Methods: The study data were extracted from the adult component of Prospective Epidemiological Research Studies in IrAN (PERSIAN) from 17 centers in 14 different provinces of Iran. DMFT score was used as a measure of dental caries among adults in Iran. The concentration curve and relative concentration index (RC) was used to quantify and decompose socioeconomic-related inequalities in DMFT. Results: A total of 128,813 adults aged 35 and older were included in the study. The mean (Standard Deviation [SD]) score of D, M, F and DMFT of the adults was 3.3 (4.6), 12.6 (10.5), 2.1 (3.4) and 18.0 (9.5), respectively. The findings suggested that DMFT was mainly concentrated among the socioeconomically disadvantaged adults (RC = - 0.064; 95% confidence interval [CI), - 0.066 to - 0.063). Socioeconomic status, being male, older age and being a widow or divorced were identified as the main factors contributing to the concentration of DMFT among the worse-off adults. Conclusions: It is recommended to focus on the dental caries status of socioeconomically disadvantaged groups in order to reduce socioeconomic-related inequality in oral health among Iranian adults. Reducing socioeconomic-related inequalities in dental caries should be accompanied by appropriate health promotion policies that focus actions on the fundamental socioeconomic causes of dental disease. © 2020 The Author(s).
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