Fig. 4From: Transitions in hookah (Waterpipe) smoking by U.S. sexual minority adults between 2013 and 2015: the population assessment of tobacco and health study wave 1 and wave 2Transitions in Hookah Use and Co-use of E-Products and Alternative Tobacco Products among SM vs. Heterosexual Adult Current Hookah Smokers, Waves 1 and 2 (2013–2014). E-products include e-cigarettes, and e-hookah and e-pipe (Wave 2 only); and alternative tobacco products include cigarettes, smokeless tobacco (i.e., snus, moist snuff, dip, spit, chewing tobacco or dissolvable tobacco) and other combustibles (i.e., traditional cigars, filtered cigars, cigarillos, pipe tobacco)Back to article page