Quitting Behaviors among Dual Cigarette/E-cigarette Users and Cigarette Smokers Enrolled in the Tobacco User Adult Cohort (TUAC)
Menée aux Etats-Unis à partir d'entretiens en face à face avec 705 fumeurs réguliers, cette étude évalue l'association entre l'utilisation parallèle de la cigarette électronique et une réduction de la consommation de cigarettes ainsi que l'abstinence ou le sevrage tabagique
Purpose : We examined quitting behaviors among a cohort of dual users (cigarettes and e-cigarettes) and exclusive cigarette smokers for: 1) cigarette smoking reduction; 2) quit attempts; 3) abstinence from cigarettes; and 4) abstinence from all tobacco products. Methods : Participants enrolled in the Tobacco User Adult Cohort (TUAC) and categorized as ‘daily’ user of cigarettes and ‘daily’ or ‘some days per week’ use of e-cigarettes (i.e. dual users) (n=88) or ‘daily’ user of cigarettes only (i.e. cigarette smokers) (n=617) served as the analytic sample. Participants were interviewed face-to-face every six months, through 18 months. Self-reported current product(s) used, cessation interest, quit attempts and abstinence from cigarettes and all tobacco products were collected. Results : No difference in reduction of cigarette consumption over time was noted between groups. Rates of reporting an attempt to quit all tobacco products (≥ 24 hours of not using any tobacco in an attempt to quit) also did not differ by group. Compared to cigarette smokers, dual users were more likely to report abstinence from cigarettes at six months (OR 2.54, p=0.045) but not at 12 or 18 months. There was no significant difference in abstinence from all tobacco products by group at six, 12 or 18 months. Conclusions : While dual use of e-cigarettes has been cited as a potential cessation tool for cigarette smokers, our findings indicated that this association was only observed in the short term. We also found no evidence of any association between dual use and eventual abstinence from all tobacco products. Implications : Our study observed that, in the natural environment, dual users of cigarettes and e-cigarettes were more likely than cigarette smokers to quit cigarettes in the short term but no more likely to quit using cigarettes and all tobacco products over time.