JUUL preference among Korean adult tobacco users and its effect on attempts to quit tobacco: A follow-up survey four months post JUUL launch

INTRODUCTION This study examined the various factors in the selection of JUUL (and/ or), a pod-mod type electronic cigarette (EC), and the changes in EC patterns before and after the JUUL debut on 24 May 2019, using follow-up survey data of adult tobacco users in South Korea.METHODS This study examined transition outcomes among tobacco users and factors associated with future JUUL use. Convenience sample data were collected from adult tobacco users in South Korea, from March-April 2019 (baseline, n=2173) to September 2019 (follow-up, n=779). Results were obtained from the 779 respondents in the follow-up survey, and user data of one or more tobacco products were analyzed. The changes in the proportion of EC and JUUL use during this period were calculated, and multivariate logistic regression analysis was conducted to investigate the selection factors of JUUL.RESULTS Four months after the JUUL launch, the proportion of current EC and JUUL users among the whole sample increased by 10.3% (42.6-52.9%, p<0.001) and 17.7 % (4.0-21.7%, p<0.001), respectively, while the proportion of triple users doubled (18.7% vs 37.5%, p<0.001). Among current EC users, the percentage of quitting EC within one month decreased from 18.7% to 8.7%; this change was more pronounced among concurrent JUUL users than non-JUUL users (p<0.001). In the multivariate logistic analysis with adjustment for possible confounders, JUUL use was significantly associated with male sex, young and middle age, and metropolitan residency status at the baseline survey.CONCLUSIONS After the launch of JUUL in South Korea, EC users, including JUUL and triple users, increased significantly, but the intention to stop EC decreased significantly. Given the serious interests of the tobacco industry in these products, additional regulation is warranted.

Automated summary

This study examined the factors influencing the selection of JUUL among adult tobacco users in South Korea, as well as the changes in electronic cigarette (EC) usage patterns before and after the launch of JUUL. The results showed a significant increase in the proportion of EC and JUUL users, as well as triple users, after 4 months of JUUL's debut. The intention to quit EC decreased, particularly among concurrent JUUL users. Logistic regression analysis revealed that JUUL use was associated with male sex, young and middle age, and metropolitan residency status.