Tianze Sun1, Carmen C W Lim2, Daniel Stjepanović3, Janni Leung4, Jason P Connor5, Coral Gartner6, Wayne D Hall3, Gary C K Chan3. 1. National Centre for Youth Substance Use Research, The University of Queensland, Australia; School of Psychology, The University of Queensland, Australia; NHMRC Centre of Research Excellence on Achieving the Tobacco Endgame, School of Public Health, Faculty of Medicine, The University of Queensland, Australia. Electronic address: tianze.sun@uq.net.au. 2. National Centre for Youth Substance Use Research, The University of Queensland, Australia; School of Psychology, The University of Queensland, Australia. 3. National Centre for Youth Substance Use Research, The University of Queensland, Australia. 4. National Centre for Youth Substance Use Research, The University of Queensland, Australia; School of Psychology, The University of Queensland, Australia; National Drug and Alcohol Research Centre, University of New South Wales, Australia. 5. National Centre for Youth Substance Use Research, The University of Queensland, Australia; Discipline of Psychiatry, The University of Queensland, Australia. 6. NHMRC Centre of Research Excellence on Achieving the Tobacco Endgame, School of Public Health, Faculty of Medicine, The University of Queensland, Australia.
Abstract
INTRODUCTION: An increase in electronic cigarette (EC) use among US youth has raised concerns that their use may increase conventional cigarette smoking. METHODS: Repeated cross-sectional data from two large nationally representative samples of US youth were drawn from the National Youth Tobacco Survey (NYTS) and Monitoring the Future (MTF). Students from grade 6-12 of the NYTS (N = 98,454-132,003) and students from grade 12 of the MTF (N = 17,870-30,981) were included in the analyses. Trends in smoking behavior, intention to smoke in the future and perceived smoking harms among youth who do and do not use ECs were estimated from 2014 to 2020 using weighted multinomial logistic regression and predicted marginal probabilities. RESULTS: The prevalence for regular smoking decreased among youth who regularly use ECs. For example, among regular EC users, smoking prevalence decreased from 27.8% to 6.7% (-21%; 99.67% CI:[-32.3%, -9.9%]) in the NYTS between 2014 and 2020 and from 31.8% to 10.6% (-21.2%, 99.67% CI:[-35.0%, -7.3%]) in the MTF between 2014 and 2018. Intent to smoke in the future and perceiving smoking as harmless decreased or remained unchanged during the same period. For example, among regular EC users, there was no significant change in intention to smoke next year in the NYTS between 2014 and 2018; intention to smoke in the next 5 years decreased significantly from 30.7% to 11.2% (-19.5%, 99.67% CI:[-37.7%, -1.3%]) in the MTF. CONCLUSIONS: In two national samples of US youth, smoking prevalence declined by a sizeable relative percentage. Intent to smoke in the future and harm perceptions of smoking declined or remained unchanged while EC use increased. Results provide little evidence that EC use has increased conventional cigarette smoking among youth.
INTRODUCTION: An increase in electronic cigarette (EC) use among US youth has raised concerns that their use may increase conventional cigarette smoking. METHODS: Repeated cross-sectional data from two large nationally representative samples of US youth were drawn from the National Youth Tobacco Survey (NYTS) and Monitoring the Future (MTF). Students from grade 6-12 of the NYTS (N = 98,454-132,003) and students from grade 12 of the MTF (N = 17,870-30,981) were included in the analyses. Trends in smoking behavior, intention to smoke in the future and perceived smoking harms among youth who do and do not use ECs were estimated from 2014 to 2020 using weighted multinomial logistic regression and predicted marginal probabilities. RESULTS: The prevalence for regular smoking decreased among youth who regularly use ECs. For example, among regular EC users, smoking prevalence decreased from 27.8% to 6.7% (-21%; 99.67% CI:[-32.3%, -9.9%]) in the NYTS between 2014 and 2020 and from 31.8% to 10.6% (-21.2%, 99.67% CI:[-35.0%, -7.3%]) in the MTF between 2014 and 2018. Intent to smoke in the future and perceiving smoking as harmless decreased or remained unchanged during the same period. For example, among regular EC users, there was no significant change in intention to smoke next year in the NYTS between 2014 and 2018; intention to smoke in the next 5 years decreased significantly from 30.7% to 11.2% (-19.5%, 99.67% CI:[-37.7%, -1.3%]) in the MTF. CONCLUSIONS: In two national samples of US youth, smoking prevalence declined by a sizeable relative percentage. Intent to smoke in the future and harm perceptions of smoking declined or remained unchanged while EC use increased. Results provide little evidence that EC use has increased conventional cigarette smoking among youth.
Authors: Brienna N Rutherford; Tianze Sun; Carmen C W Lim; Jack Chung; Brandon Cheng; Lily Davidson; Calvert Tisdale; Janni Leung; Daniel Stjepanović; Jason P Connor; Gary C K Chan Journal: Int J Environ Res Public Health Date: 2022-01-20 Impact factor: 3.390
Authors: Mohammadhassan Mirbolouk; Ellen Boakye; Olufunmilayo Obisesan; Albert D Osei; Omar Dzaye; Ngozi Osuji; John Erhabor; Andrew C Stokes; Omar El-Shahawy; Carlos J Rodriguez; Glenn A Hirsch; Emelia J Benjamin; Andrew P DeFilippis; Rose Marie Robertson; Aruni Bhatnagar; Michael J Blaha Journal: Prev Med Rep Date: 2022-07-22