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. 2018 Nov 9;15(11):2515. doi: 10.3390/ijerph15112515

Figure 2.

Figure 2

Transitions in current cigarette use among young adults (aged 18–24 years) and older adults (aged 25+ years) in the United States: 2013–2014 to 2014–2015. Notes. Each bar in the figure represents a cigarette user group at Wave 1 (W1). N underneath each bar indicates the weighted population size for each cigarette user group at W1 (i.e., the scale of the y-axis differs across bars). Transitions between W1 and Wave 2 (W2) are indicated by the colored distribution of each bar; for example, among the 2,045,798 young adult Cigarette only users at W1, 11% transitioned to No tobacco use at W2, 60% continued Cigarettes only use at W2, and 26% transitioned to Cigarettes plus use at W2. Current tobacco use defined as: for cigarettes, currently using everyday/somedays and smoked at least 100 cigarettes in lifetime; for hookah, currently using everyday/somedays/usually weekly/usually monthly; for all other products, currently using everyday/somedays. Single/multiple-product use defined with respect to the following six product types: cigarettes, cigars, hookah, pipe, noncombustible (i.e., smokeless tobacco, snus pouches, dissolvable tobacco), ENDS (which includes e-cigarettes at each wave and e-products at W2). ‘Cigarettes only’ defined as current use of cigarettes and no current use of any other product, ‘Cigarettes plus’ defined as current use of cigarettes plus current use of at least one other product, ‘Cigars only’ defined as current use of cigars and no current use of any other product, ‘Hookah only’ defined as current use of hookah and no current use of any other product, ‘Noncombustible only’ defined as current use of noncombustible and no current use of any other product, ‘ENDS only’ defined as current use of ENDS and no current use of any other product, ‘Non-cigarette multiple-product’ defined as current use of at least two product types excluding cigarettes, ‘No tobacco’ defined as no current use of any tobacco product. Estimates are suppressed when unweighted denominator <50 or RSE>30%. Non-suppressed estimates <3 are not shown in the figure (for readability) but are shown in the appendix.