Table. Prevalence of Self-Reported Exposure to Secondhand Tobacco Smoke in Homes and Vehicles During the Past 7 Days Among US Middle and High School Students, Overall and by Selected Characteristics, National Youth Tobacco Survey, 2019.
| Characteristic | Overall, % (95% CI) | Current Combustible Tobacco Usea, % (95% CI) | Current Noncombustible Tobacco Use Onlyb, % (95% CI) | No Current Tobacco Usec, % (95% CI) |
|---|---|---|---|---|
| SHS Exposure in Homed | ||||
| Overall | 25.3 (23.4–27.3) | 52.5 (48.7–56.2) | 31.7 (28.8–34.8) | 20.8 (19.1–22.6) |
| School level | ||||
| Middle school | 25.9 (23.6–28.3) | 62.2 (58.3–66.0)e | 38.2 (32.3–44.5)e | 22.6 (20.5–24.8)e |
| High school | 24.9 (22.6–27.4) | 49.5 (44.9–54.0)e | 29.9 (26.5–33.5)e | 19.1 (17.1–21.3)e |
| Sex | ||||
| Male | 24.9 (22.9–27.1) | 50.0 (44.7–55.4) | 31.5 (28.2–35.1) | 20.4 (18.5–22.5) |
| Female | 25.7 (23.7–27.8) | 55.8 (51.2–60.2) | 32.0 (28.4–35.7) | 21.3 (19.5–23.2) |
| Race/ethnicity | ||||
| Non-Hispanic white | 27.4 (24.8–30.1)e | 55.3 (50.2–60.3)e | 33.6 (29.8–37.6) | 22.7 (20.4–25.1)e |
| Non-Hispanic black | 28.4 (24.6–32.6)e | 52.2 (45.5–58.9)e | 33.3 (24.9–43.0) | 24.0 (20.3–28.2)e |
| Hispanic | 20.0 (18.4–21.8)e | 47.7 (42.8–52.8)e | 27.1 (22.7–32.0) | 15.5 (13.9–17.3)e |
| Non-Hispanic other | 20.2 (16.5–24.4)e | 37.6 (23.8–53.8)e | 30.2 (19.9–43.0) | 17.9 (14.4–21.9)e |
| SHS Exposure in Vehiclef | ||||
| Overall | 23.3 (21.4–25.4) | 56.3 (52.6–60.0) | 34.7 (31.9–37.6) | 17.4 (15.7–19.3) |
| School level | ||||
| Middle school | 21.4 (19.0–24.0)e | 58.0 (51.9–63.8) | 33.0 (27.3–39.2) | 18.3 (16.2–20.6) |
| High school | 24.9 (22.6–27.3)e | 56.0 (51.7–60.3) | 35.2 (32.0–38.6) | 16.7 (14.7–18.8) |
| Sex | ||||
| Male | 22.7 (20.6–25.0) | 55.0 (50.8–59.2) | 34.8 (31.4–38.3) | 16.5 (14.5–18.6)e |
| Female | 24.0 (21.9–26.2) | 58.0 (53.2–62.6) | 34.7 (31.3–38.4) | 18.5 (16.5–20.5)e |
| Race/ethnicity | ||||
| Non-Hispanic white | 26.1 (23.5–28.9)e | 62.4 (57.8–66.8)e | 37.7 (34.3–41.1)e | 19.4 (17.1–21.9)e |
| Non-Hispanic black | 26.4 (23.4–29.7)e | 50.6 (42.5–58.6)e | 41.7 (32.9–51.1)e | 21.2 (18.4–24.4)e |
| Hispanic | 17.6 (15.9–19.3)e | 48.9 (43.4–54.4)e | 25.9 (21.9–30.4)e | 12.6 (11.0–14.3)e |
| Non-Hispanic other | 14.0 (11.2–17.4)e | 31.3 (20.2–45.2)e | 26.9 (17.5–38.8)e | 11.6 (9.0–14.7)e |
Abbreviations: CI, confidence interval; SHS, secondhand smoke.
Combustible tobacco products are cigarettes; cigars, cigarillos, little cigars; pipe filled with tobacco; bidis; and hookah or waterpipe. Current users reported use of ≥1 of these products on ≥1 days of the past 30 days.
Noncombustible tobacco products are e-cigarettes; chewing tobacco, snuff, or dip; snus; or dissolvable tobacco. Current users reported exclusive use of ≥1 of these products on ≥1 days of the past 30 days.
Noncurrent tobacco product users reported use of combustible and noncombustible tobacco products on 0 days of the past 30 days.
A response from 1 to 7 to the question “During the past 7 days, on how many days did someone smoke tobacco products in your home while you were there?”
Significant difference in estimates for characteristic categories based on χ2 test (P < .05).
A response from 1 to 7 to the question “During the past 7 days, on how many days did you ride in a vehicle when someone was smoking a tobacco product?”