title: E-cigarette use in adults: a qualitative study of users' perceptions and future use intentions.
abstract: BACKGROUND
  There has been an exponential increase in the prevalence of e-cigarette use, particularly among youth. However, adult use is also rising, and there have been relatively few qualitative studies with adult users to understand their reasons for use and future use intentions. Such information is needed to inform both prevention and cessation approaches.
  
  
  METHODS
  Thirty-one e-cigarette users participated in one of several focus groups assessing the appeal of e-cigarettes as well as comparisons to combustible cigarettes and approved smoking cessation aids. We also obtained perspectives on future use intentions and interest in e-cigarette cessation interventions. Verbatim transcripts were analyzed using the constant comparative method.
  
  
  RESULTS
  Participants reported several aspects of e-cigarette appeal as compared to approved cessation treatment options. These included similarities to combustible cigarettes, fewer side effects, and control of e-cigarettes to suit personal preferences. Participants were split on whether they preferred flavors that mimicked or contrasted with their combustible cigarettes (i.e., tobacco vs. alternative flavors, such as candy). Some participants who were unmotivated to quit smoking reported an unanticipated disinterest in continuing use of combustible cigarettes shortly after initiating e-cigarettes. Despite strong interest in reducing nicotine dosage, the majority did not intend to fully discontinue e-cigarettes.
  
  
  CONCLUSIONS
  Understanding e-cigarette users' perspectives can inform policy and treatment development. Regulatory and policy initiatives will need to balance the appealing characteristics of e-cigarettes with the potential for negative public health outcomes.
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA; Department of Psychology, University of South Florida, Tampa, FL, USA; Department of Oncologic Sciences, University of South Florida, Tampa, FL, USA.
authors.forename: Vani Nath
authors.initials: VN
authors.lastname: Simmons
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA; Department of Oncologic Sciences, University of South Florida, Tampa, FL, USA; Department of Community and Family Health, University of South Florida, Tampa, FL, USA.
authors.forename: Gwendolyn P
authors.initials: GP
authors.lastname: Quinn
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA.
authors.forename: Paul T
authors.initials: PT
authors.lastname: Harrell
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA.
authors.forename: Lauren R
authors.initials: LR
authors.lastname: Meltzer
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA; Department of Psychology, University of South Florida, Tampa, FL, USA.
authors.forename: John B
authors.initials: JB
authors.lastname: Correa
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA; Department of Psychology, University of South Florida, Tampa, FL, USA.
authors.forename: Marina
authors.initials: M
authors.lastname: Unrod
authors.affiliation: Department of Health Outcomes and Behavior, H. Lee Moffitt Cancer Center, Tampa, FL, USA; Department of Psychology, University of South Florida, Tampa, FL, USA; Department of Oncologic Sciences, University of South Florida, Tampa, FL, USA.
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Brandon
keywords: adults; electronic cigarettes; electronic nicotine delivery systems; focus groups; nicotine replacement therapy; smoking