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Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes.
Nicotine Tob Res. 2020 04 21; 22(5):672-680.NT

Abstract

BACKGROUND

Dual use of combustible and electronic cigarettes (e-cigarettes) is a growing use pattern; more than half of e-cigarette users are dual users. However, little is known regarding the course of dual use; for example, the likelihood of discontinuation of either combustible or e-cigarettes or both.

METHODS

Adult daily smokers and dual users (daily smokers who also vaped at least once per week) who did not intend to quit use of either product in the next 30 days participated in a longitudinal, observational study (N = 322, 51.2% women, 62.7% white, mean age = 42.27 [SD = 14.05]). At baseline, participants completed demographics and smoking and vaping history assessments. They also reported daily cigarette and e-cigarette use via timeline follow-back assessment and provided a breath sample for carbon monoxide assay at 4-month intervals for 1 year.

RESULTS

Of those who completed the year 1 follow-up, 1.9% baseline smokers and 8.0% dual users achieved biochemically confirmed seven-day point-prevalence abstinence from combustible cigarettes (χ2 = 4.57, p = .03). Of initial dual users, by 1 year 43.9% were smoking only, 48.8% continued dual use, 5.9% were vaping only, and 1.4% abstained from both products. Among baseline smokers, 92.3% continued as exclusive smokers. Baseline dual users who continued e-cigarette use were more likely to be white and report higher baseline e-cigarette dependence.

CONCLUSIONS

In this community sample, the majority of dual users transitioned to exclusive smoking. A higher percentage of dual users quit smoking than smokers, but attrition and baseline differences between the groups compromise strong conclusions. Sustained e-cigarette use was related to baseline e-cigarette dependence.

IMPLICATIONS

This research suggests that dual use of combustible and e-cigarettes is not a sustained pattern for the majority of dual users, but it is more likely to be a continued pattern if the user is more dependent on e-cigarettes. There was evidence that dual users were more likely to quit smoking than exclusive smokers, but this may be due to factors other than their dual use.

Authors+Show Affiliations

Center for Tobacco Research and Intervention of Wisconsin, Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI.Center for Tobacco Research and Intervention of Wisconsin, Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI.Center for Tobacco Control Research and Education, Department of Medicine, University of California San Francisco, San Francisco, CA.Center for Tobacco Research and Intervention of Wisconsin, Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI.

Pub Type(s)

Journal Article
Observational Study
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

31058284

Citation

Piper, Megan E., et al. "Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes." Nicotine & Tobacco Research : Official Journal of the Society for Research On Nicotine and Tobacco, vol. 22, no. 5, 2020, pp. 672-680.
Piper ME, Baker TB, Benowitz NL, et al. Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes. Nicotine Tob Res. 2020;22(5):672-680.
Piper, M. E., Baker, T. B., Benowitz, N. L., & Jorenby, D. E. (2020). Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes. Nicotine & Tobacco Research : Official Journal of the Society for Research On Nicotine and Tobacco, 22(5), 672-680. https://doi.org/10.1093/ntr/ntz065
Piper ME, et al. Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes. Nicotine Tob Res. 2020 04 21;22(5):672-680. PubMed PMID: 31058284.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes. AU - Piper,Megan E, AU - Baker,Timothy B, AU - Benowitz,Neal L, AU - Jorenby,Douglas E, PY - 2018/12/21/received PY - 2019/04/25/accepted PY - 2019/5/7/pubmed PY - 2020/10/23/medline PY - 2019/5/7/entrez SP - 672 EP - 680 JF - Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco JO - Nicotine Tob Res VL - 22 IS - 5 N2 - BACKGROUND: Dual use of combustible and electronic cigarettes (e-cigarettes) is a growing use pattern; more than half of e-cigarette users are dual users. However, little is known regarding the course of dual use; for example, the likelihood of discontinuation of either combustible or e-cigarettes or both. METHODS: Adult daily smokers and dual users (daily smokers who also vaped at least once per week) who did not intend to quit use of either product in the next 30 days participated in a longitudinal, observational study (N = 322, 51.2% women, 62.7% white, mean age = 42.27 [SD = 14.05]). At baseline, participants completed demographics and smoking and vaping history assessments. They also reported daily cigarette and e-cigarette use via timeline follow-back assessment and provided a breath sample for carbon monoxide assay at 4-month intervals for 1 year. RESULTS: Of those who completed the year 1 follow-up, 1.9% baseline smokers and 8.0% dual users achieved biochemically confirmed seven-day point-prevalence abstinence from combustible cigarettes (χ2 = 4.57, p = .03). Of initial dual users, by 1 year 43.9% were smoking only, 48.8% continued dual use, 5.9% were vaping only, and 1.4% abstained from both products. Among baseline smokers, 92.3% continued as exclusive smokers. Baseline dual users who continued e-cigarette use were more likely to be white and report higher baseline e-cigarette dependence. CONCLUSIONS: In this community sample, the majority of dual users transitioned to exclusive smoking. A higher percentage of dual users quit smoking than smokers, but attrition and baseline differences between the groups compromise strong conclusions. Sustained e-cigarette use was related to baseline e-cigarette dependence. IMPLICATIONS: This research suggests that dual use of combustible and e-cigarettes is not a sustained pattern for the majority of dual users, but it is more likely to be a continued pattern if the user is more dependent on e-cigarettes. There was evidence that dual users were more likely to quit smoking than exclusive smokers, but this may be due to factors other than their dual use. SN - 1469-994X UR - https://www.unboundmedicine.com/medline/citation/31058284/Changes_in_Use_Patterns_Over_1_Year_Among_Smokers_and_Dual_Users_of_Combustible_and_Electronic_Cigarettes_ L2 - https://academic.oup.com/ntr/article-lookup/doi/10.1093/ntr/ntz065 DB - PRIME DP - Unbound Medicine ER -