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KMID : 0371020100430030193
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Journal of Preventive Medicine and Public Health
2010 Volume.43 No. 3 p.193 ~ p.204
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A Longitudinal Study on the Causal Association Between Smoking and Depression
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Kang Eun-Jeong
Lee Jae-Hee
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Abstract
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Objectives: The objective of this study was to analyze the causal relationship between smoking and depression using longitudinal data.
Methods: Two waves of the Korea Welfare Panel collected in 2006 and 2007 were used. The sample consisted of 14 426 in 2006 and 13 052 in 2007 who were aged 20 and older. Smoking was measured by smoking amount (none/
Results: The logistic regression testing for the causal relationship between smoking and depression showed that smoking at year 1 was significantly related to depression at year 2. Smoking amounts associated with depression were different among age groups. On the other hand, the results from the logistic regression testing for the opposite direction of the relationship between smoking and depression found no significant association regardless of age group.
Conclusions: The study results showed some evidence that smoking caused depression but not the other way around.
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KEYWORD
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Causal relationship, Depression, Longitudinal analysis, Smoking
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