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dc.contributor.authorSaxena, Arti 19:11:46 (GMT) 19:11:46 (GMT)
dc.description.abstractBackground Dual-use of electronic (e-cigarettes) and tobacco cigarettes has increased in the past few years (Czoli et al., 2015) without evidence of it being effective as a smoking cessation aid (Manzoli et al., 2015). Understanding quitting tobacco use while using e-cigarettes continues to be a public health priority. There are limited studies, especially from Canada, that examine smoking abstinence among young adult e-cigarette users and non-users. This study examined the relationship between e-cigarette use and smoking cessation over a six-month period. Methods Secondary analysis of longitudinal data obtained from a randomized controlled trial survey for Crush the Crave (CTC), a smartphone-based cessation intervention, was conducted with a sample of 851 Canadian young adult smokers. Persistent e-cigarette use (within the trial) was defined as using e-cigarettes at both baseline and 6-month follow-up. Use of e-cigarettes only at baseline or at follow-up was defined as transient use. Non-users did not use e-cigarettes at either baseline or follow-up. People who ever used nicotine-containing e-cigarettes were also compared for 30 and 7-day point prevalence abstinence at 6 months. Socio-demographic, psychological and quit support usage predictors were also examined. Using logistic regression, odds ratios were calculated for the rates of cessation achieved for all e-cigarette user categories before and after controlling for potential confounders. Results Dual users who continued to smoke at 6-month follow-up survey (persistent e-cigarette users) had a lower 30-day cessation rate than transient or non-users (13% vs 23% and 29%, respectively). This was validated by the odds ratio, non-users being three times more likely to quit than persistent users, even after adjusting for other predictors (OR=3.2, 95% CI [1.41-7.40], p<0.01). Smokers with high self-efficacy were about twice as likely to quit than people with low efficacy (OR=1.92, 95% CI [1.14–3.21], p<0.05), even after adjusting for presumed causes of cessation. The majority of persistent e-cigarette users perceived e-cigarettes as a quit aid (χ2=5.70, p<0.05) and had high self-efficacy to quit at follow-up (χ2=15.5, p<0.01). No statistically significant results were found for other predictors. Conclusion Persistent use of e-cigarettes, across the course of study, was associated with a lower rate of smoking cessation while transient use of e-cigarettes and no use of e-cigarettes was associated with a higher rate of cessation for a young adult population of smokers intending to quit smoking.en
dc.publisherUniversity of Waterlooen
dc.subjectDual useen
dc.subjectSmoking Cessationen
dc.subjectElectronic cigarettesen
dc.subjectYoung adultsen
dc.subjectMobile phone applicationen
dc.titleSmoking Cessation among Young Adult Dual Users of E-cigarettes and Tobacco Cigarettes in a Mobile Phone Intervention: Analysis of Data from a Randomized Controlled Trialen
dc.typeMaster Thesisen
dc.pendingfalse of Public Health and Health Systemsen Health and Health Systemsen of Waterlooen
uws-etd.degreeMaster of Scienceen
uws.contributor.advisorGarcia, John Michael
uws.contributor.affiliation1Faculty of Applied Health Sciencesen

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