title: Electronic Cigarettes Among Priority Populations: Role of Smoking Cessation and Tobacco Control Policies.
abstract: BACKGROUND
  The electronic cigarette (e-cigarette) market has evolved rapidly in recent years, with exploding growth in brands and product types; however, e-cigarette use among priority (sexual minority and low-income) populations and its relationship with smoking-cessation and tobacco control policies have yet to be fully characterized.
  
  
  METHODS
  The authors conducted a nationally representative online survey of 17,522 U.S. adults in 2013. Participants were drawn from GfK's KnowledgePanel. Logistic regression models were used to analyze relationships between e-cigarettes (awareness, ever use, current use) and cigarette smoking and cessation behaviors, tobacco control policies, and demographics. Analyses were conducted in 2014.
  
  
  RESULTS
  Approximately 15% of participants reported ever use of e-cigarettes, 5.1% reported current use, and 34.5% of ever users reported current use. E-cigarette awareness was lower among women, minorities, and those with low education. Ever and current use of e-cigarettes was higher among current cigarette smokers, young adults, and those with low SES; both ever use and current use were correlated with current cigarette smoking status, particularly when combined with quit intentions or attempts. Lesbian/gay/bisexual/transgender respondents had higher rates of ever use and current use. Ever use was lower in states with comprehensive smoking bans. No significant relationship between cigarette price and e-cigarette use was detected.
  
  
  CONCLUSIONS
  Ongoing surveillance of e-cigarette use among subpopulation groups and monitoring their use for combustible cigarette cessation are needed. Important variations in the patterns and correlates of e-cigarette awareness and use exist among priority populations. These findings have implications for future e-cigarette policy decisions.
authors.affiliation: Health Media Collaboratory, Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, Illinois. Electronic address: jhuang12@uic.edu.
authors.forename: Jidong
authors.initials: J
authors.lastname: Huang
authors.affiliation: Health Media Collaboratory, Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, Illinois.
authors.forename: Yoonsang
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Moores Cancer Center, University of California San Diego, La Jolla, California.
authors.forename: Lisa
authors.initials: L
authors.lastname: Vera
authors.affiliation: Health Media Collaboratory, Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, Illinois.
authors.forename: Sherry L
authors.initials: SL
authors.lastname: Emery
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D066300:Electronic Nicotine Delivery Systems / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011203:Poverty / Q000706:statistics & numerical data; D012737:Sex Factors; D019529:Sexuality / Q000706:statistics & numerical data; D012907:Smoking / Q000453:epidemiology* / Q000331:legislation & jurisprudence*; D016540:Smoking Cessation / Q000523:psychology / Q000706:statistics & numerical data*; D012959:Socioeconomic Factors; D014481:United States / Q000453:epidemiology; D055815:Young Adult