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s2smodern

An analysis of federal data by University of Iowa researchers [...] finds that more American adults have tried e-cigarettes, but the rate of current use appears to be declining.

Wei Bao, assistant professor of epidemiology in the UI College of Public Health, analyzed national data from more than 101,000 Americans [...] The NHIS has asked adult participants since 2014 whether they currently use e-cigarettes every day, some days, or not at all.