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. 2019 Nov 12;322(18):1824-1827.
doi: 10.1001/jama.2019.15331.

Prevalence of e-Cigarette Use Among Adults in the United States, 2014-2018

Hongying Dai  1 , Adam M Leventhal  2
Affiliations

Prevalence of e-Cigarette Use Among Adults in the United States, 2014-2018

Hongying Dai et al. JAMA. .

Abstract

This population epidemiology study uses 2014-2018 data from National Health Interview Surveys to assess trends in prevalence of current and daily e-cigarette use by US adults and to characterize trends by sociodemographic and smoking status among young adults (18-24 years).

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Conflict of interest statement

Conflict of Interest Disclosures: None reported.

Figures

Figure.
Figure.. Prevalence of e-Cigarette Use Among US Adults, 2014-2018, Stratified by Age (N = 155 556)a
aWeighted estimates from National Health Interview Survey years 2014 (n = 36 697), 2015 (n = 33 672), 2016 (n = 33 028), 2017 (n = 26 742), 2018 (n = 25 417). Logistic regression was used to examine linear and quadratic trends from 2014 to 2018 and the differences between 2017 and 2018, controlling for sex, race/ethnicity, poverty ratio, and cigarette smoking status. bCurrent use classified for respondents who reported now using e-cigarettes every day or some days. cSignificant year × age interaction (P < .001). dDaily use classified for respondents who reported now using e-cigarettes every day. eSignificant quadratic trend for year in overall sample (P = .03). fSignificant quadratic trend for year in respective age group (P = .045). gNonsignificant linear (P = .49) and quadratic (P = .24) trends for year in respective age group. hSignificant linear trend for year in respective age group (P < .001). iSignificant year × age interaction (P = .009). jSignificant linear trend for year in overall sample (P = .02). kSignificant linear trend for year for respective age group (P = .007). lNonsignificant linear (P = .09) and quadratic (P = .31) trends for year in respective age group. mNonsignificant linear (P = .18) and quadratic (P = .43) trends for year in respective age group. nSignificant year × age interaction (P = .01).
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