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Open AccessArticle

The Relation between Frequency of E-Cigarette Use and Frequency and Intensity of Cigarette Smoking among South Korean Adolescents

1
Department of Family Medicine, ASAN Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
2
National Evidence-Based Healthcare Collaborating Agency, Seoul 100705, Korea
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2017, 14(3), 305; https://doi.org/10.3390/ijerph14030305
Received: 27 October 2016 / Revised: 28 February 2017 / Accepted: 10 March 2017 / Published: 14 March 2017
(This article belongs to the Section Global Health)
Introduction: The prevalence of adolescent electronic cigarette (e-cigarette) use has increased in most countries. This study aims to determine the relation between the frequency of e-cigarette use and the frequency and intensity of cigarette smoking. Additionally, the study evaluates the association between the reasons for e-cigarette use and the frequency of its use. Materials and Methods: Using the 2015 Korean Youth Risk Behavior Web-Based Survey, we included 6655 adolescents with an experience of e-cigarette use who were middle and high school students aged 13–18 years. We compared smoking experience, the frequency and intensity of cigarette smoking, and the relation between the reasons for e-cigarette uses and the frequency of e-cigarette use. Results: The prevalence of e-cigarette ever and current (past 30 days) users were 10.1% and 3.9%, respectively. Of the ever users, approximately 60% used e-cigarettes not within 1 month. On the other hand, 8.1% used e-cigarettes daily. The frequent and intensive cigarette smoking was associated with frequent e-cigarette uses. The percentage of frequent e-cigarette users (≥10 days/month) was 3.5% in adolescents who did not smoke within a month, but 28.7% among daily smokers. Additionally, it was 9.1% in smokers who smoked less than 1 cigarette/month, but 55.1% in smokers who smoked ≥20 cigarettes/day. The most common reason for e-cigarette use was curiosity (22.9%), followed by the belief that they are less harmful than conventional cigarettes (18.9%), the desire to quit smoking (13.1%), and the capacity for indoor use (10.7%). Curiosity was the most common reason among less frequent e-cigarette users; however, the desire to quit smoking and the capacity for indoor use were the most common reasons among more frequent users. Conclusions: Results showed a positive relation between frequency or intensity of conventional cigarette smoking and the frequency of e-cigarette use among Korean adolescents, and frequency of e-cigarette use differed according to the reason for the use of e-cigarettes. View Full-Text
Keywords: electronic cigarette; e-cigarette; smoking; adolescent; frequency; tobacco electronic cigarette; e-cigarette; smoking; adolescent; frequency; tobacco
MDPI and ACS Style

Lee, J.A.; Lee, S.; Cho, H.-J. The Relation between Frequency of E-Cigarette Use and Frequency and Intensity of Cigarette Smoking among South Korean Adolescents. Int. J. Environ. Res. Public Health 2017, 14, 305. https://doi.org/10.3390/ijerph14030305

AMA Style

Lee JA, Lee S, Cho H-J. The Relation between Frequency of E-Cigarette Use and Frequency and Intensity of Cigarette Smoking among South Korean Adolescents. International Journal of Environmental Research and Public Health. 2017; 14(3):305. https://doi.org/10.3390/ijerph14030305

Chicago/Turabian Style

Lee, Jung A.; Lee, Sungkyu; Cho, Hong-Jun. 2017. "The Relation between Frequency of E-Cigarette Use and Frequency and Intensity of Cigarette Smoking among South Korean Adolescents" Int. J. Environ. Res. Public Health 14, no. 3: 305. https://doi.org/10.3390/ijerph14030305

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Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

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