Korean J Fam Pract 2019; 9(4): 383-388  https://doi.org/10.21215/kjfp.2019.9.4.383
Correlation between Smoking and Depression in Korean Adult Group: The Korean National Health and Nutrition Examination Survey (2014)
Junghae Moon, John A. Linton*, Junho Choi, Jungeun Kim, Jiyoung Lee, Yoonjoo Jo
Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
John A. Linton
Tel: +82-2-3472-7582 Fax: +82-2-2228-5760
E-mail: YOHAN@yuhs.ac
ORCID: https://orcid.org/0000-0001-8000-3049
Received: September 11, 2017; Revised: October 17, 2017; Accepted: October 22, 2017; Published online: August 20, 2019.
© The Korean Academy of Family Medicine. All rights reserved.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: Though several factors have been found to be associated with depression, yet many others remain uncovered. A few studies have focused on the correlation between smoking and depression. This study was designed to explore whether there was a relationship between smoking and depression in a Korean adult group.
Methods: This study was based on the 2014 data of 17,780 Koreans obtained from the sixth Korea National Health and Nutrition Examination Survey (KNHNES, 2013–2015). The participants’ depression status was evaluated based on their responses to survey. The correlation between smoking and depression was examined using multiple linear regression analysis after adjusting confounders. The result was represented as correlation factors, and a P-value of less than 0.05 was considered statistically significant.
Results: Our study revealed higher depression prevalence in the current smoker group as compared to non-smokers and ex-smokers and this difference was statistically significant.
Conclusion: Smoking status was statistically significantly related to depression. Among the three smoking status groups, the current smoker group had the highest prevalence of depression. Hence s stopping smoking was considered to be effective and important to prevent depression.
Keywords: Smoking; Depression; Korean
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