Patterns of E-cigarette Use and Subsequent Cigarette Smoking Cessation Over 2 Years (2013/2014–2015/
Thursday, April 15, 2021
Posted by: Natalia Gromov
Allison
M Glasser, Mahathi Vojjala, Jennifer Cantrell, David T Levy, Daniel P Giovenco,
David Abrams, Raymond Niaura.
Patterns of E-cigarette
Use and Subsequent Cigarette Smoking Cessation Over 2 Years
(2013/2014–2015/2016) in the Population Assessment of Tobacco and Health Study.
Nicotine & Tobacco Research, Volume 23, Issue 4, April 2021, Pages 669–677,
https://doi.org/10.1093/ntr/ntaa182
Introduction. Understanding
the population impact of e-cigarettes requires determining their effect on
cigarette smoking cessation.
Methods. Using
the US Population Assessment of Tobacco and Health cohort, we examined smoking
cessation among adult current cigarette smokers at Wave 1 with follow-up data
at Waves 2 and 3 (n = 9724).
Results. By
Wave 3 (2015/2016), 17.3% of smokers had quit smoking. Smokers using
e-cigarettes daily or who increased to daily use over the three waves were two
to four times more likely to have quit in the short term (<1 year) and long
term (1+ years) compared with never e-cigarette users (p < .001).
E-cigarette use in the last quit attempt was associated with a higher
likelihood of short-term (<1 year) quitting at Wave 3 (adjusted relative
risk ratio: 1.33; 95% confidence interval: 1.04, 1.71) compared with smokers
who did not use an e-cigarette in their last quit attempt. Noncurrent (no use
in any wave) e-cigarette users and users who were unstable in use frequency
were 33% and 47% less likely to quit in the short-term, respectively (p <
.001). Flavored (vs nonflavored) and using a rechargeable (vs disposable)
e-cigarette device was associated with an increased likelihood of both short-
and long-term quitting.
Conclusion. Smoking
cessation was more likely among frequent e-cigarette users, users of
e-cigarettes in last quit attempt, and users of flavored and rechargeable
devices. Less frequent, unstable, past, or never e-cigarette users were less
likely to quit smoking. Monitoring the relationship between patterns of
e-cigarette and cigarette use is complex but critical for gauging the potential
of e-cigarettes as a harm reduction tool.
Implications. This
study suggests that consistent and frequent e-cigarette use over time is
associated with cigarette smoking cessation among adults in the United States.
In addition, findings suggest that flavored e-cigarette use and use of
rechargeable e-cigarette devices can facilitate smoking cessation. These
results underscore the importance of carefully defining and characterizing
e-cigarette exposure patterns, potential confounders, and use of e-cigarettes
to quit smoking, as well as variations in length of the smoking cessation.
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