ASH Adult Survey
ASH
The online 2021 ASH Smokefree Great Britain Adult Survey collected data on tobacco and vaping product use among adults aged 18 years or older between February 18 and March 18, 2021. Like the ASH Youth Survey, participants were drawn from an existing online panel maintained by YouGov using active sampling. The experimental design and 3 conditions used in the ASH Adult Survey were identical to those used in the ASH Youth Survey (The survey was completed by 12 248 adults. Respondents who reported “Prefer not to say” (n = 47) for the outcome measure and/or “Don’t know” for covariates (n = 155) were excluded, resulting in a final analytic sample of 12 046 respondents. eTable 1 in 