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ABSTRACT: Introduction
Little is known about the effects of long-term e-cigarette use, particularly the risks of relapse to cigarette smoking or increased dependence.Methods
In a 2012-2014 baseline online e-cigarette survey, 1,863 respondents consented to participate in future research. A follow-up online survey was conducted in 2017-2018 to assess changes in e-cigarette use behaviors and e-cigarette-related dependence. For both surveys, exclusive e-cigarette use was defined as only using e-cigarettes in the past 7 days, and poly use was defined as using both e-cigarettes and other tobacco or nicotine products in the past 7 days. The Penn State Electronic Cigarette Dependence Index (PSECDI) score was calculated for each study subject and was used to evaluate e-cigarette dependence. P
SUBMITTER: Du P
PROVIDER: S-EPMC9811611 | biostudies-literature | 2019 Sep
REPOSITORIES: biostudies-literature