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Adolescent to emerging adulthood smoking trajectories: when do smoking trajectories diverge, and do they predict early adulthood nicotine dependence

METHODS In April 2021, we conducted a survey among a convenience sample of adults who reported ever purchasing tobacco or e-cigarettes using Amazons Mechanical Turk (MTurk)

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Participants had lower dependence to EC use compared to smoking according to their responses to the Fagerstrm Test for Cigarette Dependence (FTCD) 12 and the Cigarette Dependence Scale (CDS) 13

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