Butler, Ailsa R and Lindson, Nicola and Fanshawe, Thomas R and Theodoulou, Annika and Begh, Rachna and Hajek, Peter and McRobbie, Hayden and Bullen, Chris and Notley, Caitlin and Rigotti, Nancy A and Hartmann-Boyce, Jamie (2022) Longer-term use of electronic cigarettes when provided as a stop smoking aid: systematic review with meta-analyses. Preventive Medicine, 165, Part B, 107182. doi: 10.1016/j.ypmed.2022.107182.
External website: https://www.sciencedirect.com/science/article/pii/...
Moderate certainty evidence supports use of nicotine electronic cigarettes to quit smoking combustible cigarettes. However, there is less certainty regarding how long people continue to use e-cigarettes after smoking cessation attempts. We set out to synthesise data on the proportion of people still using e-cigarettes or other study products at 6 months or longer in studies of e-cigarettes for smoking cessation. We updated Cochrane searches (November 2021). For the first time, we meta-analysed prevalence of continued e-cigarette use among individuals allocated to e-cigarette conditions, and among those individuals who had successfully quit smoking. We updated meta-analyses comparing proportions continuing product use among individuals allocated to use nicotine e-cigarettes and other treatments. We included 19 studies (n = 7787). The pooled prevalence of continued e-cigarette use at 6 months or longer was 54% in participants assigned to e-cigarette conditions. Of participants who had quit combustible cigarettes overall 70% were still using e-cigarettes at six months or longer. Heterogeneity in direction of effect precluded meta-analysis comparing long-term use of nicotine e-cigarettes with NRT. More people were using nicotine e-cigarettes at longest follow-up compared to non-nicotine e-cigarettes, but CIs included no difference. The levels of continued e-cigarette use observed may reflect the success of e-cigarettes as a quitting tool. Further research is needed to establish drivers of variation in and implications of continued use of e-cigarettes.
B Substances > Tobacco (cigarette smoking) > Nicotine product (e-cigarette / vaping / heated)
HJ Treatment or recovery method > Substance disorder treatment method > Cessation of tobacco use
HJ Treatment or recovery method > Treatment outcome
VA Geographic area > International
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