Impact of E-cigarette Device Warnings

The purpose of this randomized clinical trial is to determine whether e-cigarette warnings increase intentions to quit vaping without the unintended consequence of pushing users toward smoking. This trial addresses these issues by evaluating the impact of e-cigarette warnings by randomly assigning vapers to have their devices and refills labeled with control messages, text warnings, or pictorial warnings. Participants will be US adult (ages 21+) vapers. The trial expects ~1,200 participants to complete Visits 1, 3, and 5.

Inclusion Criteria:Be 21 years or olderCurrently vape every day or some daysUse an e-cigarette that contains nicotineBe able to attend 2 in-person appointmentsBe able to bring in e-cigarette device and 2 weeks' worth or refills to 2 in-person appointmentsBe willing to let us apply a sticker to the device and refill materialsBe willing to use only the labeled e-cigarette during the studyBe able to complete 3 surveys online at homeBe able to read and speak EnglishBe able to complete a survey on a computer without helpExclusion Criteria:Pregnant peopleIf e-cigarette device cannot be labeledVapers concurrently enrolled in any research studies about vaping or using other tobacco productsVapers who live in the same household as someone who has enrolled in the study