Decomposing socioeconomic inequality in dental caries in Iran: cross-sectional results from the PERSIAN cohort study

Najafi, Farid and Rezaei, Satar and Hajizadeh, Mohammad and Soofi, Moslem and Salimi, Yahya and Kazemi Karyani, Ali and Soltani, Shahin and Ahmadi, Sina and Homaie Rad, Enayatollah and Karami Matin, Behzad and Pasdar, Yahya and Hamzeh, Behrooz and Nazar, Mehdi Moradi and Mohammadi, Ali and Poustchi, Hossein and Motamed-Gorji, Nazgol and Moslem, Alireza and Khaleghi, Ali Asghar and Fatthi, Mohammad Reza and Aghazadeh-Attari, Javad and Ahmadi, Ali and Pourfarzi, Farhad and Somi, Mohammad Hossein and Sohrab, Mehrnoush and Ansari-Moghadam, Alireza and Edjtehadi, Farhad and Esmaeili, Ali and Joukar, Farahnaz and Lotfi, Mohammad Hasan and Aghamolaei, Teamur and Eslami, Saied and Tabatabaee, Seyed Hamid Reza and Saki, Nader and Haghdost, Ali Akbar (2020) Decomposing socioeconomic inequality in dental caries in Iran: cross-sectional results from the PERSIAN cohort study. ARCHIVES OF PUBLIC HEALTH, 78 (1).

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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.

Item Type: Article
Uncontrolled Keywords: Socioeconomic status; Dental caries; Concentration index; Decomposition; Iran
Subjects: WA Public Health > WA. 900 Vital Statistics
WU Dentistry. Oral surgery
Divisions: Reserach Vice-Chancellar Department > Modeling in Health Research Center
Depositing User: zeynab . bagheri
Date Deposited: 17 Feb 2021 06:16
Last Modified: 17 Feb 2021 06:16
URI: http://eprints.skums.ac.ir/id/eprint/8855

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