Below are the key findings: Sales Overall expenditures and promotion for e-cigarette products continued to increase from over $643 million in 2018 to over $1 billion total in 2019 before declining to still nearly $720 million in 2020
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Thomas, K., Kaplan, S
The authors attempted to explain heterogeneity via subgroup analysis, which found non-significant heterogeneity estimates when the set of studies was limited to the six with young adults only, three studies conducted after 2014, and three nationally representative studies
For each tobacco use and disease category, we calculated crude death rates per 1000 person-years (the sum of years contributed by all participants in the tobacco use category): We then estimated HRs adjusted for age only, then for age, race/ethnicity, marital status, education, income, region, and survey year
(2007) Slogans of Ronson The art of modern smoking
