Effects of e-cigarette use on cigarette smoking among U.S. youth, 2004-2018.

Introduction:
This text provides an analysis of the impact of e-cigarette use on cigarette smoking among US youth from 2004 to 2018. The study uses data from the National Youth Tobacco Surveys (NYTS) to assess changes in cigarette and e-cigarette use over time and to compare model-predicted and actual cigarette smoking behavior. The study also examines the risk profile of youth e-cigarette users and whether they fit the traditional risk profile of cigarette smokers.

Key Points:

* The study found that the decline in current cigarette smoking slowed in 2014, and the decline in ever cigarette smoking accelerated after 2012.
* Ever and current combined cigarette and/or e-cigarette use declined during 2011-2013 and increased during 2013-2014 with no significant change during 2014-2018 for either variable.
* The psychosocial model estimated that 69.0% of current cigarette smokers and 9.3% of current e-cigarette users (who did not smoke cigarettes) would smoke cigarettes in 2018.
* The traditional psychosocial risk factors for cigarette smoking suggest that e-cigarette users do not fit the traditional risk profile of cigarette smokers.
* The study used data from the NYTS, a school-based, paper-and-pencil, cross-sectional survey of US middle and high school students.
* The study used interrupted time series analysis and multivariable logistic regression to analyze the data.
* The study assessed changes in cigarette and e-cigarette use over time and compared model-predicted and actual cigarette smoking behavior.
* The study also examined the risk profile of youth e-cigarette users and whether they fit the traditional risk profile of cigarette smokers.

Main Message:
The main message of the text is that the introduction of e-cigarettes was followed by a slowing decline in current cigarette smoking, a stall in combined cigarette and e-cigarette use, and an accelerated decline in ever cigarette smoking. The study also found that traditional psychosocial risk factors for cigarette smoking suggest that e-cigarette users do not fit the traditional risk profile of cigarette smokers. This highlights the need for further research and regulation to understand and prevent the impact of e-cigarette use on cigarette smoking among US youth.

Creamer MR, Dutra LM, Sharapova SR, et al. Effects of e-cigarette use on cigarette smoking among U.S. youth, 2004-2018. Preventive medicine. 2021;142:106316. doi:10.1016/j.ypmed.2020.106316