A longitudinal analysis of e-cigarette use and cigar, little cigar or cigarillo initiation among youth and youth adults: 2017–2019

•E-cigarette use predicts initaition of cigar, little cigar or cigarillo use.•The odds of youth and young adults who had ever used JUUL or other e-cigarettes going on to use cigars, little cigars or cigarillos was more than three times greater compared to never users of e-cigarettes.•Restrictions on cigars, little cigars or cigarillos should be considered in conjunction with policies designed to reduce the youth e-cigarette use.