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. 2016 Mar 4;11(3):e0151022.
doi: 10.1371/journal.pone.0151022. eCollection 2016.

Association between Electronic Cigarette Use and Asthma among High School Students in South Korea

Jun Ho Cho  1 , Samuel Y Paik  2
Affiliations

Association between Electronic Cigarette Use and Asthma among High School Students in South Korea

Jun Ho Cho et al. PLoS One. .

Abstract

Objectives: Little is known about health outcomes related to electronic cigarette (EC) use, despite its growing popularity. The aim of this study is to investigate the association between EC use and asthma.

Methods: The study design is a cross-sectional study. A total of 35,904 high school students were included as the final study population. The presence of asthma was based on a student's self-reported doctor diagnosis of asthma in the past 12 months.

Results: Prevalence rates of asthmatics in 'current EC users' (n = 2,513), 'former EC users' (n = 2,078), and 'never EC users' (n = 31,313), were 3.9% (n = 98), 2.2% (n = 46) and 1.7% (n = 530), respectively. Comparing 'current EC' users with 'never EC' users, the unadjusted OR for asthma was 2.36 (95% CI: 1.89-2.94). In order to control for the effect of conventional cigarette (CC) smoking, after stratifying the subjects by the three CC smoking categories (never CC, former CC, and current CC), within the 'never CC' category, the unadjusted OR for asthma for 'current EC' users was 3.41 (95% CI: 1.79-6.49), and the adjusted OR was 2.74 (95% CI: 1.30-5.78). Severe asthma was reflected by the number of days absent from school due to asthma symptoms; current EC users had the highest adjusted OR for severe asthma compared to 'never EC' users.

Conclusions: When compared to a reference population of high school students in South Korea, EC users have an increased association with asthma and are more likely to have had days absent from school due to severe asthma symptoms. In conclusion, the results indicate that EC use may be a risk factor for asthma. The results may be useful in developing a scientific basis for the evaluation of a potential health hazard by EC.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

References

    1. Williams M, Villarreal A, Bozhilov K, Lin S, Talbot P. Metal and silicate particles including nanoparticles are present in electronic cigarette cartomizer fluid and aerosol. PLoS One. 2013; 8: e57987 10.1371/journal.pone.0057987 Epub. 2013 Mar 20. - DOI - PMC - PubMed
    1. Fairchild AL, Bayer R, Colgrove J. The Renormalization of Smoking? E-Cigarettes and the Tobacco “Endgame”. N Engl J Med. 2014; 370: 293–295. 10.1056/NEJMp1313940 - DOI - PubMed
    1. Martínez-Sánchez JM, Ballbè M, Fu M, Martín-Sánchez JC, Saltó E, Gottlieb M, et al. Electronic cigarette use among adult population: a cross-sectional study in Barcelona, Spain (2013–2014). BMJ Open. 2014; 4: e005894 10.1136/bmjopen-2014-005894 - DOI - PMC - PubMed
    1. King BA, Patel R, Nguyen KH, Dube SR. Trends in Awareness and Use of Electronic Cigarettes among U.S. Adults, 2010–2013. Nicotine Tob Res. 2014. September 19. pii: ntu191. [Epub ahead of print] - PMC - PubMed
    1. Lee S, Grana RA, Glantz SA. Electronic cigarette use among Korean adolescents: a cross-sectional study of market penetration, dual use, and relationship to quit attempts and former smoking. J Adolesc Health. 2014; 54: 684–690. 10.1016/j.jadohealth.2013.11.003 - DOI - PMC - PubMed

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