Electronic cigarettes, nicotine use trends and use initiation ages among US adolescents from 1999 to 2018.

ABSTRACT:

Background and aims

Recent nicotine use trends raise concerns that electronic cigarettes (ECs) may act as a gateway to cigarettes among adolescents. The aims of this study were to examine prevalence trends of exclusive EC use, exclusive cigarette use and dual use to determine the corresponding ages of initiation and to investigate hypothetical trends in total nicotine use and cigarette use in the absence of ECs among US adolescents.

Design

Observational study using data from the National Youth Tobacco Survey (NYTS) to statistically model trends in the prevalences of each user group and their initiation ages. Projections from counterfactual models based on data from 1999 to 2009 (before EC introduction) were compared with actual trends based on data from 1999 to 2018. Rigorou

SUBMITTER: Foxon F 

PROVIDER: S-EPMC7606254 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature