부산대학교 도서관

Objectives: Many smokers who start using ENDS engage in dual use of cigarettes and ENDS. This paper examines time trends in dual use after a JUUL Starter Kit purchase, and changes in cigarette consumption among those remaining dual users. Methods: In the ADJUSST study, a cohort of adult smokers who purchased a JUUL Starter Kit were followed naturalistically 6 times over 12 months. Trends in dual use and reported complete switching away from cigarettes (ie, no past 30-day smoking), and changes in daily average cigarettes per day from baseline at 6 and 12 months were examined. Results: Dual use declined over time as complete switching increased. By 12 months, 43.2% reported dual using, and 51.2% reported switching away from cigarettes. Among dual users, approximately 60% reduced their cigarette consumption substantially (by = 50%); average reductions in cigarette consumption were > 80%. Only a small minority (3%-10%) substantially increased cigarette consumption. Conclusions: Dual use of smoking and JUUL declines over time as switching away from smoking increases. This suggests that, for most smokers, dual use is a transitional state leading to switching completely away from cigarettes. Furthermore, dual use is often marked by substantial reductions in cigarette consumption. ACKNOWLEDGMENT & CONFLICT OF INTEREST STATEMENT: Funding for this study was provided by Juul Labs Inc. Through Pinney Associates, Saul Shiffman provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs Inc. In that role, he acted as internal editor and coordinator for the papers in this special issue. Erik Augustson is a full-time employee of Juul Labs Inc. As Senior Director of Behavioral Affairs at JLI, he oversaw the conduct of the behavioral research reported in this special issue.