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. 2021 Nov;111(11):2050–2058. doi: 10.2105/AJPH.2021.306448

TABLE 1—

Univariate and Multivariable Analysis of E-Cigarette Use Behaviors Among Current E-Cigarette Users: United States, 2019 National Youth Tobacco Survey

Weighted % (95% CI) OR (95% CI) AOR (95% CI)
Dual usea
Race/ethnicity
 NH White 35.0 (30.2, 39.8) 1 (Ref) 1 (Ref)
 NH Black 49.9 (41.6, 58.2) 1.8 (1.3, 2.6) 2.2b (1.5, 3.2)
 Hispanic/Latino 33.2 (29.4, 37.0) 0.9 (0.7, 1.2) 1.1b (0.9, 1.4)
 Other 34.0 (22.1, 46.0) 1.0 (0.6, 1.7) 1.0b (0.6, 1.8)
Occasional e-cigarette usec
Race/ethnicity
 NH White 44.7 (41.6, 47.8) 1 (Ref) 1 (Ref)
 NH Black 71.2 (64.0, 78.4) 3.1 (2.1, 4.5) 3.7d (2.3, 5.9)
 Hispanic/Latino 59.0 (54.9, 63.1) 1.8 (1.5, 2.2) 1.6d (1.3, 2.0)
 Other 55.7 (46.1, 65.4) 1.6 (1.0, 2.4) 1.5d (0.9, 2.3)
Frequent e-cigarette usec
Race/ethnicity
 NH White 36.3 (32.9, 39.7) 1 (Ref) 1 (Ref)
 NH Black 13.5 (8.4, 18.6) 0.3 (0.2, 0.4) 0.2d (0.1, 0.4)
 Hispanic/Latino 21.2 (17.3, 25.1) 0.5 (0.4, 0.6) 0.5d (0.4, 0.7)
 Other 28.3 (19.7, 36.9) 0.7 (0.4, 1.1) 0.8d (0.5, 1.3)
Flavored e-cigarette usee
Race/ethnicity
 NH White 75.0 (72.5, 77.6) 1 (Ref) 1 (Ref)
 NH Black 43.9 (37.1, 50.7) 0.3 (0.2, 0.3) 0.4f (0.3, 0.5)
 Hispanic/Latino 63.0 (58.6, 67.3) 0.6 (0.5, 0.7) 0.7f (0.5, 0.9)
 Other 66.8 (57.5, 76.1) 0.7 (0.4, 1.0) 0.8f (0.5, 1.2)

Note. AOR = adjusted odds ratio; CI = confidence interval; NH = non-Hispanic; OR = odds ratio. The sample size was n = 3628.

a

Dual use (co-use of e-cigarettes and cigarettes or other tobacco products) was the dependent variable (yes vs no).

b

Adjusted by age, gender, and tobacco use by a household member.

c

Occasional use (1‒5 days in the past 30 days) and frequent use (≥20 days in the past 30 days) were the dependent variables (yes vs no) and analyzed separately.

d

Adjusted by age, gender, current cigarette smoking, current other tobacco use, and tobacco use by a household member.

e

Flavored e-cigarette use (tasted like menthol [mint], alcohol [wine, cognac], candy, fruit, chocolate, or any other flavors) was the dependent variable (yes vs no). Flavored e-cigarette use was correlated with the number of days using e-cigarettes in the past 30 d. In 2019, the proportions of flavored e-cigarette use among current e-cigarette users reporting e-cigarettes 1–2 days, 3–5 days, 6–9 days, 10–19 days, 20–29 days, and all 30 days were 54.2%, 66.4%, 71.6%, 76.0%, 79.6%, and 84.1%, respectively.

f

Adjusted by age, gender, current cigarette smoking, current other tobacco use, tobacco use by a household member, and the number of days using e-cigarettes in the past 30 days.