Supplemental Table. Unadjusted Prevalence for Type of Tobacco Use Among Employed Adults in the US Workplace (N = 221,264), Behavioral Risk Factor Surveillance System, 2017^a .

Variable	Tobacco Type
	Cigarettes Only	E-Cigarettes Only	Dual Use
Employment type
Employed for wages	14.0 (13.7–14.4)	2.6 (2.4–2.8)	2.2 (2.1–2.4)
Self-employed	14.6 (13.7–15.5)	1.8 (1.5–2.1)	2.6 (2.2–3.1)
Age, y
18–24	12.4 (11.4–13.4)	7.6 (6.8–8.4)	4.1 (3.5–4.7)
25–44	16.4 (15.9–17.0)	2.6 (2.4–2.9)	2.8 (2.6–3.1)
45–64	13.1 (12.7–13.5)	1.1 (1.0–1.2)	1.4 (1.3–1.6)
≥65	7.2 (6.6–7.9)	0.4 (0.2–0.6)	0.7 (0.5–1.0)
Sex
Male	15.8 (15.3–16.3)	3.2 (3.0–3.4)	2.6 (2.4–2.8)
Female	12.0 (11.6–12.5)	1.6 (1.4–1.7)	1.9 (1.7–2.1)
Race/ethnicity
White	14.7 (14.3–15.0)	2.8 (2.6–3.0)	2.6 (2.4–2.8)
Black	14.5 (13.6–15.5)	1.7 (1.3–2.2)	1.9 (1.5–2.5)
American Indian/Alaska Native	23.4 (20.5–26.5)	3.9 (2.6–5.9)	3.3 (2.4–4.7)
Asian/Native Hawaiian/Pacific Islander	8.1 (6.7–9.7)	1.5 (1.0–2.1)	1.2 (0.8–1.7)
Other	17.7 (15.8–19.7)	4.3 (3.3–5.5)	3.5 (2.6–4.7)
Hispanic	13.1 (12.2–14.2)	1.8 (1.4–2.1)	1.8 (1.4–2.2)
Education
Less than high school	26.2 (24.6–27.9)	1.9 (1.5–2.5)	3.0 (2.5–3.6)
High school graduate	20.3 (19.6–21.0)	3.6 (3.2–3.9)	3.4 (3.1–3.7)
Some college	14.8 (14.3–15.4)	3.0 (2.7–3.3)	2.8 (2.5–3.1)
College graduate	5.4 (5.2–5.7)	1.3 (1.2–1.4)	0.9 (0.8–1.0)
Annual household income, $
Less than 15,000	21.3 (19.4–23.2)	2.0 (1.5–2.7)	2.7 (2.1–3.5)
15,000–24,999	22.8 (21.7–24.0)	2.6 (2.2–3.1)	3.9 (3.4–4.5)
25,000–34,999	20.1 (18.8–21.4)	3.0 (2.5–3.5)	2.9 (2.4–3.4)
35,000–49,999	18.6 (17.5–19.7)	2.6 (2.2–3.0)	3.1 (2.6–3.5)
≥50,000	10.0 (9.7–10.4)	2.3 (2.1–2.4)	1.7 (1.5–1.9)
Health care coverage
No	24.8 (23.6–26.0)	2.6 (2.3–3.1)	3.9 (3.4–4.5)
Yes	12.6 (12.3–12.9)	2.4 (2.3–2.6)	2.1 (1.9–2.2)

Abbreviations: CI, confidence interval.

^a Percentages are weighted. Values are percentage (95% confidence interval).