Relative Harm Perceptions of E-Cigarettes Versus Cigarettes, U.S. Adults, 2018–2020, in American Journal of Preventive Medicine
key takeaway: "Perceptions of E-cigarettes as more harmful than cigarettes doubled year on year, increasing most between 2019 and 2020 (2018: 6.8%, 2019: 12.8%, 2020: 28.3%), whereas uncertainty in relative harm declined (2018: 38.2%, 2019: 34.2%, 2020: 24.7%)."
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