Abstract
INTRODUCTION: Puff Bar disposable e-cigarettes are now marketed with a 'tobacco-free nicotine' claim. We assessed the effect of this claim on non-tobacco-using young adults' perceptions of and intentions of using Puff Bar. METHODS: We conducted an online randomised between-subjects experiment among non-tobacco-using young adults (ages 18-29 years; n=1822). Participants viewed depictions of Puff Bar e-cigarettes with the claim that the product contains 'tobacco-free nicotine' (experimental group; n=909) or simply 'nicotine' (control group; n=913). Multivariable regressions were used to assess the associations between experimental conditions and Puff Bar use intentions, harm perceptions, use expectancies and perceived relative use of Puff Bar versus other e-cigarettes, controlling for participant characteristics. RESULTS: Compared with the control group, the experimental group who saw the 'tobacco-free nicotine' claim reported higher intentions of using Puff Bar (coefficient=0.17, p<0.001). The experimental group had a lower likelihood of perceiving Puff Bar use as 'extremely or very harmful' (OR=0.63, p<0.001) and 'strongly or somewhat' agreeing with the negative expectancy of using Puff Bar (OR=0.67, p<0.001). Additionally, the experimental group reported being 'much more or more likely' to use Puff Bar over other e-cigarettes (OR=1.67, p<0.001). DISCUSSION: Puff Bar's tobacco-free nicotine claim may increase non-tobacco-using young adults' intentions of using Puff Bar and reduce harm perceptions and negative expectancy towards using Puff Bar. The claim may also prompt the use of Puff Bar over other e-cigarette brands and types. These findings are concerning given the health effects and regulations for tobacco-free nicotine products are not immediately clear.