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International Journal for Equity in Health
Published in: International Journal for Equity in Health 1/2016

Open Access 01-12-2016 | Research

Socioeconomic inequality in oral health behavior in Iranian children and adolescents by the Oaxaca-Blinder decomposition method: the CASPIAN- IV study

Authors: Saeid Safiri, Roya Kelishadi, Ramin Heshmat, Ali Rahimi, Shirin Djalalinia, Anoosheh Ghasemian, Ali Sheidaei, Mohammad Esmaeil Motlagh, Gelayol Ardalan, Morteza Mansourian, Hamid Asayesh, Mahdi Sepidarkish, Mostafa Qorbani

Published in: International Journal for Equity in Health | Issue 1/2016

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Abstract

Background

The present study set to describe the socioeconomic inequality associated with oral hygiene behavior among Iranian pediatric population.

Methods

A representative sample of 13486 school students aged 6–18 years was selected through multistage random cluster sampling method from urban and rural areas of 30 provinces in Iran. Principle Component Analyses (PCA) correlated variables summarized as socioeconomic status (SES). Association of independent variables with tooth brushing was assessed through logistic regression analysis. Decomposition of the gap in tooth brushing between the first and fifth SES quintiles was assessed using the counterfactual decomposition technique. To assess the relation between tooth brushing and each socioeconomic category, Concentration Index (C) and the slope index of inequality (SII) were used, representing the linear regression coefficient.

Results

The participation rate was 90.6 % (50.7 % boys and 75.6 % urban inhabitants). The mean age of participants was 12.47 ± 3.36 years. The frequency of tooth brushing increased across SES quintiles, prevalence of tooth brushing between the first and fifth quintile, under 20 % difference, increased from 58.22 (95 % CI: 56.24,60.20) to 78.61 (95 % CI: 77.00,80.24). Only 3 % of the difference is explained by the factors considered in the study, and 17 % remained unknown. Residence area, family size, and smoking status made a significant contribution to the gap between the first and last SE groups. Residence area [ −2.01 (95 % CI: −3.46, −0.55)] was along the maximum levels of gaps between SE categories.

Conclusions

The findings revealed a socio-economic inequality in oral health behavior in Iranian children and adolescents. Also, factors influencing oral health are addressed to develop and implement complementary public health actions.
Appendix
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Metadata
Title
Socioeconomic inequality in oral health behavior in Iranian children and adolescents by the Oaxaca-Blinder decomposition method: the CASPIAN- IV study
Authors
Saeid Safiri
Roya Kelishadi
Ramin Heshmat
Ali Rahimi
Shirin Djalalinia
Anoosheh Ghasemian
Ali Sheidaei
Mohammad Esmaeil Motlagh
Gelayol Ardalan
Morteza Mansourian
Hamid Asayesh
Mahdi Sepidarkish
Mostafa Qorbani
Publication date
01-12-2016
Publisher
BioMed Central
Published in
International Journal for Equity in Health / Issue 1/2016
Electronic ISSN: 1475-9276
DOI
https://doi.org/10.1186/s12939-016-0423-8

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