Abstract:Purpose To evaluate the trend of harm perception for e-cigarettes and the trend of the association between harm perception for e-cigarettes and for cigarettes among US youth from 2014 to 2019. Design, setting and subjects The National Youth Tobacco Survey is an annual, cross-sectional, school-based survey done among youth selected using three-stage probability sampling. Analysis Data were drawn from the 2014 to 2019 Surveys. A Multinomial logistic regression model was used to assess the association between har… Show more
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