Longitudinal transitions of cigarettes and electronic nicotine delivery systems among adolescents: Construction of a retrospective cohort using recall data from a cross-sectional sample.

Introduction:
This text summarizes a research paper on the use of electronic nicotine delivery systems (ENDS) and cigarettes among adolescents. The paper uses a retrospective cohort constructed from cross-sectional data to examine the transitions between different states of tobacco and nicotine product use.

Key Points:

* The study found that ENDS experimentation increases the likelihood of cigarette smoking initiation among adolescents.
* a significant proportion of adolescents who experiment with ENDS and cigarettes continue to use cigarettes.
* The study suggests comprehensive tobacco control policies for all tobacco/nicotine products and monitoring the timing of NCTNP initiation in cross-sectional surveys.
* The study used a cross-sectional cohort design to generate longitudinal data on adolescent tobacco or nicotine use.
* Participants were categorized into four mutually exclusive tobacco or nicotine use states.
* a multistate Markov model was used to identify transitions between the states and calculate transition intensity ratios (TIRs).
* The study examined the current use of tobacco or nicotine products to assess both gateway effects to cigarettes and whether ENDS use helps adolescents quit cigarette smoking.

Main Message:
The study highlights the importance of monitoring the use of electronic nicotine delivery systems (ENDS) and cigarettes among adolescents. The findings suggest that ENDS experimentation increases the likelihood of cigarette smoking initiation and that a significant proportion of adolescents who experiment with ENDS and cigarettes continue to use cigarettes. The study emphasizes the need for comprehensive tobacco control policies for all tobacco/nicotine products and the importance of monitoring the timing of NCTNP initiation in cross-sectional surveys. Overall, the study underscores the need for continued research and vigilance in the regulation of tobacco and nicotine products to protect public health.

Kang h, Cho SI. Longitudinal transitions of cigarettes and electronic nicotine delivery systems among adolescents: Construction of a retrospective cohort using recall data from a cross-sectional sample. Tobacco induced diseases. 2020;18:92. doi:10.18332/tid/128488