Association Between E-Cigarette Use Initiated After Cigarette Smoking and Smoking Abstinence: A Cros
Tuesday, January 19, 2021
Posted by: Natalia Gromov
Saller
FS, Agaku IT, Filippidis FT
Association Between
E-Cigarette Use Initiated After Cigarette Smoking and Smoking Abstinence: A
Cross-Sectional Study among Adolescent Established Smokers in the USA.
Tobacco Control Published Online First: 07 January 2021. doi:
10.1136/tobaccocontrol-2020-055943
Background.
Recent years have seen a rapid increase in the popularity of electronic
cigarettes (e-cigarettes) among adolescents in the USA. Evidence on their role
in the continuation of or abstinence from cigarette smoking among young smokers
remains scarce.
Objective.
To examine the relationship between e-cigarette use initiated after cigarette
smoking and abstinence from cigarette smoking among US adolescent established
smokers.
Methods.
The data were drawn from the 2015–2018 National Youth Tobacco Survey—a
nationally representative survey of US middle and high school students.
Multivariable logistic regression was used to assess the association between
ever e-cigarette use and past 30-day abstinence from cigarette smoking. The
analytical sample comprised ever established cigarette smokers with or without
a history of e-cigarette use after smoking initiation.
Results.
Neither experimental (adjusted OR 0.67, 95% CI 0.39–1.14) nor prior established
(adjusted OR 1.56, 95% CI 0.96–2.56) nor current established (adjusted OR 0.65,
95% CI 0.41–1.03) e-cigarette use was statistically significantly associated
with subsequent abstinence from cigarette smoking among adolescent ever
established smokers. These findings were largely consistent across sensitivity
analyses using alternative key definitions, although experimental and current
established e-cigarette use was significantly negatively associated with past
6-month abstinence.
Conclusions.
We found no evidence that e-cigarette use among US adolescents already smoking
cigarettes is associated with subsequent abstinence from cigarette smoking;
there was some evidence of an inverse association among experimental and
current established e-cigarette users. These findings could inform future
regulatory and public health efforts regarding youth e-cigarette use and the
reduction of youth cigarette smoking in the USA.
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