e-Cigarette Packs by Experimental Condition
The green standardized pack color, using the same olive-green Pantone 448 C shade in a matte finish, was chosen to reflect the current standardized packaging requirements for tobacco cigarette packs in Great Britain.The survey was completed by 2513 youths. Respondents who reported “Prefer not to say” for the outcome (n = 13) or any covariates (n = 31) were excluded from the sample, resulting in a final analytic sample of 2469 respondents. eTable 1 in 