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Long-term trends in smoking prevalence and its socioeconomic inequalities in Korea, 1992–2016

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Authors
Chang, Youngs; Kang, Hee-Yeon; Lim, Dohee; Cho, Hong-Jun; Khang, Young-Ho
Issue Date
2019-09-18
Publisher
BMC
Citation
International Journal for Equity in Health, 18(1):148
Keywords
Republic of Korea
Abstract
Background
The aim of this study was to investigate long-term trends in smoking prevalence and its socioeconomic inequalities in Korea.

Methods
Data were collected from 10 rounds of the Social Survey of Statistics Korea between 1992 and 2016. A total of 524,866 men and women aged 19 or over were analyzed. Age-adjusted smoking prevalence was calculated according to three major socioeconomic position indicators: education, occupational class, and income. The prevalence difference, prevalence ratio, slope index of inequality (SII), and relative index of inequality (RII) were calculated to examine the magnitude of inequality in smoking.

Results
Smoking prevalence among men decreased from 71.7% in 1992 to 39.7% in 2016, while smoking prevalence among women decreased from 6.5% in 1992 to 3.3% in 2016. Socioeconomic inequalities in smoking prevalence according to the three socioeconomic position indicators were found in both men and women throughout the study period. In general, absolute and relative socioeconomic inequalities in smoking, measured by prevalence difference and prevalence ratio for education and occupational class, widened during the study period among Korean men and women. In men, the SII for income increased from 7.6% in 1999 to 10.8% in 2016 and the RII for income also increased from 1.11 in 1999 to 1.31 in 2016. In women, the SII for income increased from 0.1% in 1999 to 2.4% in 2016 and the RII for income increased from 1.39 in 1999 to 2.25 in 2016.

Conclusion
Pro-rich socioeconomic inequalities in smoking prevalence were found in men and women. Socioeconomic inequalities in smoking have increased in parallel with the implementation of tobacco control policies. Tobacco control policies should be developed to decrease socioeconomic inequalities in cigarette use in Korea.
ISSN
1475-9276
Language
English
URI
http://hdl.handle.net/10371/163013
DOI
https://doi.org/10.1186/s12939-019-1051-x
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College of Medicine/School of Medicine (의과대학/대학원)Health Policy and Management (의료관리학전공)Journal Papers (저널논문_의료관리학전공)
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