Who Purchases Tobacco Online? Findings from Waves 1 and 4 of the Population Assessment of Tobacco and Health Study.

Objectives We examined the prevalence of and factors associated with usually purchasing tobacco online. Methods We analyzed Waves 1 (2013-14) and 4 (2016-17) of the US Population Assessment of Tobacco and Health adult (18+) and youth (12-17) studies: 15,450 adults and 495 youth in 2013-14 and 15,037 adults and 465 youth in 2016-17. Z-tests compared the prevalence of usually purchasing tobacco online between waves and weighted multivariable regressions identified associations between purchasing online and sociodemographics. Results The prevalence of usually purchasing tobacco online increased from 2.5% to 3.3% among adults (p < .05) and from 2.5% to 4.4% among youth (p < .05), generalizing to a US population of 2,000,000 adults and 35,000 youth. E-cigarettes and cigars and e-cigarettes and waterpipe tobacco were the most common products among adults and youth, respectively. Men, adults with greater education, adults with higher income, and non-Hispanic black youth had greater odds of purchasing tobacco online (p < .05). Conclusions Usually purchasing tobacco online remains low, although ever purchasing was not assessed. Efforts should be made to expand Internet tobacco purchasing surveillance and extend and enforce restrictions broadly across tobacco products to reduce youth access.