Self-Selected Use of e-Cigarettes and Cessation Pharmacotherapy
Participants were asked via web-based study questionnaires at baseline and 3-, 6-, and 12-month follow-ups: “In the last 30 days, how often did you use any kind of e-cigarette or vaping?” Response options included (1) not at all, (2) less than once a month, (3) once a month or more but less than once a week, (4) once a week or more but not daily, and (5) at least daily. To assess self-selected use of cessation pharmacotherapy, participants were asked: “Since the date you joined the study, did you ever use any of the following nicotine replacement therapies or medications to help you quit smoking?” Response options included (1) nicotine gum, (2) nicotine patches, (3) e-cigarettes, (4) Chantix, (5) Zyban or Wellbutrin, or (6) “free text.” The response to this question was also used to assess self-selected use of cessation pharmacotherapy and whether e-cigarettes were intentionally used to aid quitting.