Cited by 14Smoking Behavior and CessationSubstance Abuse Treatment and OutcomesGlobal Public Health Policies and Epidemiology

Considerations related to vaping as a possible gateway into cigarette smoking: An analytical review

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Lee, Peter N., Coombs, Katharine J., Afolalu, Esther F.·2018·F1000Research

Abstract

Background: Toxicant levels are much lower in e-cigarettes than cigarettes. Therefore, introducing e-cigarettes into the market seems likely to reduce smoking-related diseases (SRD). However, vaping might provide a gateway into cigarette smoking for those who otherwise would never have smoked, a concern fueled by cohort studies showing vaping predicts subsequent smoking initiation in young people. Methods: In this discussion paper, we consider various aspects of the gateway issue in youths. We provide a descriptive critical review of results from prospective studies relating to the gateway effect and the extent to which the studies considered other potential confounding variables associated with smoking initiation. We then estimate the effects of omitting a confounding variable, or misclassifying it, on the association between vaping and subsequent smoking initiation, and determine how the prevalence of smoking might be affected by any true gateway-in effects of vaping. Finally, we examine trends in e-cigarette and smoking prevalence in youths based on national surveys. Results: First, we demonstrate that although studies report that vaping significantly predicts smoking initiation following adjustment for various other predictors, the sets of predictors considered are quite incomplete. Furthermore, no study considered residual confounding arising from inaccurate measurement of predictors. More precise adjustment may substantially reduce the association. Second, we show any true gateway effect would likely affect smoking prevalence only modestly. Third, we show smoking prevalence in U.S. and U.K. youths in 2014–2016 declined somewhat faster than predicted by the preceding trend; a substantial gateway effect suggests the opposite. Finally, we argue that even if some gateway effect exists, introducing e-cigarettes still likely reduces SRDs. Conclusions: We have shown that the existence of any true gateway-in effect in youth is not yet clearly demonstrated and that the population health impact of introducing e-cigarettes is still likely to be beneficial.

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  1. Ambrose B: E-cigarette use transitions: a case study from Waves 1 & 2 of the PATH study.In: Proceedings from 2017 SRNT Annual Meeting. Pre-Conference Workshop 6 - FDA's Population Health Standard: Balancing the Risks and Benefits in Regulatory Decision-making, Florence, Italy, 2017; 29. Reference Source

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Authors
Lee, P. N., Coombs, K. J., & Afolalu, E. F.
Affiliations
P N Lee Statistics and Computing (United Kingdom) (GB)
Corresponding author
Lee, Peter N.
Venue
F1000Research
Published
2018-12-10
Volume
7
Pages
1915
ISSN
2046-1402 (ISSN-L)
OpenAlex
W4242051085
Cited by
14
References
89
Citations by year
2025: 2 · 2024: 4 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 1
FWCI
0.86
Type
journal article
Language
en
Open access
Locations
F1000Research (publishedVersion, cc-by)
Funders
Philip Morris International (Project Agreement 15)
Topics
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Social Sciences › Business, Management and Accounting › Organizational Behavior and Human Resource Management › Global Public Health Policies and Epidemiology
Keywords
vaping, electronic cigarettes, gateway effect, smoking initiation, adolescent smoking, residual confounding, misclassification, smoking prevalence trends, smoking-related diseases, tobacco control

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