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Association of e-cigarette use and smoking cessation among Canadian young adult smokers: secondary analysis of data from a randomised controlled trial

Published online by Cambridge University Press:  24 February 2020

Arti Saxena ,
Neill Bruce Baskerville Open the ORCID record for Neill Bruce Baskerville [Opens in a new window]  and
John M. Garcia
Arti Saxena
Affiliation:
School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, Canada
Neill Bruce Baskerville*
Affiliation:
Public Health Ontario, Toronto, Ontario, Canada
John M. Garcia
Affiliation:
School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, Canada
*
Author for correspondence: Neill Bruce Baskerville, E-mail: bruce.baskerville@oahpp.ca
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Abstract

Aims

This study examined the reasons for e-cigarette (EC) use, changes in self-efficacy and association between EC use and cessation of tobacco among Canadian young adult smokers over a 6-month period.

Methods

A secondary analysis was conducted using data from a randomised controlled trial (RCT) of young adult Canadian smokers. EC exposure was defined as persistent, transient and non-use of ECs at baseline and follow-up. The association between EC exposure and cessation was examined using logistic regression and adjusting for co-variates.

Results

At 6-month follow-up, persistent EC use was associated with a lower cessation rate (13%) than transient (23%) or non-use (29%). After adjusting for covariates, non-use and transient use were associated with higher odds of cessation than persistent use (AOR = 3.23, 95% CI = 1.41–7.40, P < 0.01; AOR = 2.40, 95% CI = 1.01–5.58, P < 0.05). At 6-month follow-up, persistent users (68%) had high self-efficacy as compared to transient (15%) or non-use (12%). Top reasons for EC use included use as a quit aid (67%), perceived use as less harmful (52%) and taste (32%).

Conclusions

Among young adult Canadian smokers enrolled in a RCT of a cessation intervention, persistent and transient use of ECs was associated with a lower smoking cessation rate at 6 months.

Keywords

E-cigaretteselectronic nicotine delivery systemssmoking cessationyouth and young adults
Type
Original Articles
Information
Journal of Smoking Cessation , Volume 15 , Issue 1 , March 2020 , pp. 50 - 58
Copyright
© The Author(s), 2020. Published by Cambridge University Press

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