Table 1.

Past 30-day vaping and tobacco prevalence among U.S. 12th grade students, 2017 (95% confidence intervals in parentheses), n = 2231.

	30-Day prevalence
Estimates of total nicotine use
Any nicotine use or nicotine vaping	24.7
	(21.8–27.5)
Any nicotine use or vaping any substance	28.4
	(25.5–31.4)
Type of user
Vape only non-nicotine, no other tobacco products	3.8
	(2.8–4.8)
No vaping or tobacco use	71.6
	(68.6–74.5)
Specific product
Vape any substancea	19.0
	(16.2–21.8)
Vape nicotine	12.7
	(10.4–15.0)
Smoke cigarettes	9.6
	(7.8–11.5)
Smoke large cigars, small cigars, and/or cigarillos	13.0
	(10.9–15.1)
Use smokeless tobacco	4.7
	(3.2–6.2)
Smoke hookah	6.2
	(4.4–8.0)

Note: Due to rounding, the size of the non-nicotine user group that vapes is 3.8% when estimated alone and 3.7% when calculated as the difference between the two overall nicotine use estimates (28.4–24.7 = 3.7).

^aThis measure indicates vaping of nicotine, ‘just flavoring’, and/or marijuana.