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ABSTRACT: Background and aims
Reports of youth e-cigarette use often do not disaggregate by underlying smoking status. This study compared annual 2014-19 youth estimates of past 30-day e-cigarette use prevalence and frequency by smoking status in the United States.Design
Nationally representative, cross-sectional, school-based survey [National Youth Tobacco Surveys (NYTS)]. General linear models accounting for complex survey design compared e-cigarette use prevalence by smoking status by year, overall and stratified by frequency, separately for high school (HS) and middle school (MS) students. The 2019 survey was analyzed separately because of its change in survey methodology.Setting
MSs and HSs in the United States.Participants
A total of 116 704 students from 1268 s
SUBMITTER: Tam J
PROVIDER: S-EPMC8328922 | biostudies-literature | 2021 Sep
REPOSITORIES: biostudies-literature