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KMID : 1231220170080010020
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Journal of the Korean Society for Research on Nicotine and Tobacco
2017 Volume.8 No. 1 p.20 ~ p.28
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Changes of Cigarette Smoking Initiation Age among South Korean Adults: 2007-2012
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Kim Hee-Won
Kang Si-Nae
Lim Ji-Sun
Lee Jung-Ah
Cho Hong-Jun
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Abstract
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Background: Early initiation of cigarette smoking is associated with higher risk of nicotinedependence and negative health outcomes. We analyzed the changes of factors associatedwith smoking initiation age from 2007 to 2012 in Korea.
Methods: The study subjects were 35,996 current smokers ≥19 years old in the Korea National Health and Nutrition Examination Survey from 2007 to 2012. Smoking initiation age was divided into three groups; ≤18, 19-29, and ≥30 years old. Logistic regression analysis was performed to compare participants who started smoking ＜19 years old and ≥19 years old after adjusting sociodemographic variables.
Results: The average smoking initiation age was 19.5 years old in 2007 and 19.8 years old in 2012, and for men it did not change significantly from 18.8 years old in 2007 to 19.1 years old in 2012, but for women it decreased from 25.4 years old in 2007 to 23.6 years old in 2012. When we divided the smokers into three groups (≤18, 19-29 and ≥30 years old), proportion of smokes for each groups did not change significantly among men. However for women smokers who initiated smoking ≤18 and ≥30 years old decreased from 37.5% to 33.4% and from 32.0% to 21.7% from 2007 to 2012, respectively, but who initiated smoking 19-29 years old increased from 30.5% to 44.9% from 2007 to 2012. On multivariate analysis, compared with smokers who initiated smoking ≥19 year old, smokes who initiated smoking ≤18 years old were younger and in the lower educational level. Smokers who were 19-29 years old were 9 times more chance of initiating smoking ≤18 years old than smokers who were ≥50 years old. In addition, smokers who was educated ≤6 years were more chance of initiating smoking ≤18 years old than who graduated high school. Furthermore people who initiated ≤18 years old smoked more the number of cigarettes per day.
Conclusion: Women’s smoking initiation age was much older than men became younger between 2007 and 2012 in Korea and cigarette smoking initiation age did not change among men during those periods. Tobacco control policy should consider gender difference of smoking initiation in Korea.
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KEYWORD
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Smoking, Socioeconomic factors, Age of smoking onset
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