Table 2.
Current e‐cigarette use among high school and middle school students by smoking status, National Youth Tobacco Survey 2014–19.
| Year | All | n | Wtd n | Never smokers | n | Wtd n | Former smokers | n | Wtd n | Current smokers | n | Wtd n |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High school | ||||||||||||
| 2014 | 13.4 (11.0–15.9) | 1505 | 2 010 000 | 4.7 (3.5–5.9) | 359 | 480 000 | 23.0 (18.4–27.6) | 510 | 690 000 | 56.6 (49.4–63.8) | 576 | 760 000 |
| 2015 | 16.0 (14.0–17.9) | 1469 | 2 390 000 | 6.9* (5.8–8.0) | 441 | 700 000 | 27.9 (23.8–31.9) | 479 | 820 000 | 55.9 (48.8–62.9) | 480 | 740 000 |
| 2016 | 11.3* (9.8–12.8) | 1109 | 1 680 000 | 4.6* (3.6–5.6) | 339 | 480 000 | 19.5* (16.9–22.0) | 336 | 520 000 | 52.6 (47.1–58.0) | 381 | 600 000 |
| 2017 | 11.6 (9.6–13.8) | 1066 | 1 730 000 | 5.3 (4.0–6.5) | 354 | 590 000 | 21.8 (17.4–26.2) | 280 | 470 000 | 52.4 (45.5–59.3) | 370 | 580 000 |
| 2018 | 20.8* (18.8–22.8) | 2227 | 3 050 000 | 11.7* (10.1–13.2) | 892 | 1 280 000 | 38.9* (34.0–43.9) | 634 | 830 000 | 71.0* (66.1–75.9) | 609 | 810 000 |
| 2019a | 27.5a (25.3–29.7) | 2709 | 4 110 000 | 17.5a (16.0–19.0) | 1367 | 2 020 000 | 53.6a (45.2–61.9) | 874 | 1 330 000 | 85.8a (81.6–89.9) | 466 | 740 000 |
| Middle school | ||||||||||||
| 2014 | 3.9 (2.9–4.8) | 487 | 450 000 | 1.4 (1.0–1.9) | 154 | 140 000 | 14.6 (10.2–18.9) | 133 | 130 000 | 45.8 (30.6–60.9) | 140 | 120 000 |
| 2015 | 5.3* (4.5–6.1) | 471 | 620 000 | 2.3* (1.8–2.8) | 200 | 240 000 | 19.8 (15.5–24.1) | 120 | 170 000 | 60.1 (49.4–70.8) | 116 | 150 000 |
| 2016 | 4.3* (3.6–4.9) | 392 | 500 000 | 1.7* (1.3–2.0) | 135 | 170 000 | 16.2 (13.1–19.3) | 113 | 130 000 | 57.8 (46.9–68.8) | 108 | 140 000 |
| 2017 | 3.3* (2.8–3.9) | 272 | 390 000 | 1.3 (1.0–1.7) | 94 | 140 000 | 12.0 (8.7–15.2) | 49 | 70 000 | 58.6 (48.0–69.1) | 102 | 130 000 |
| 2018 | 4.9* (4.1–5.7) | 454 | 570 000 | 2.8* (2.2–3.4) | 234 | 290 000 | 14.6 (10.5–18.7) | 85 | 80 000 | 72.8* (65.4–80.2) | 102 | 140 000 |
| 2019a | 10.5a (9.3–11.8) | 902 | 1 240 000 | 6.8a (5.9–7.7) | 540 | 730 000 | 40.8a (34.7–47.0) | 217 | 280 000 | 78.0a (71.9–84.2) | 140 | 210 000 |
Numbers in parentheses represent 95% confidence intervals.
Wtd = weighted. Estimated total number of users was rounded down to the nearest 10 000 people.
Current use of e‐cigarettes was defined as any use of e‐cigarettes during the past 30 days.
Smoking status is assessed with the question: ‘Have you ever tried cigarette smoking, even one or two puffs?’. ‘Never smokers’ are those who responded ‘no’ and ‘former smokers’ are those who responded ‘yes’, but report no smoking in the past 30 days. Youth who have smoked at all within the past 30 days are considered to be ‘current smokers’.
P‐value < 0.05 for the difference in prevalence compared to the previous year in a general linear model simultaneously testing the effect of smoking status, year and the interaction between smoking status and year.
Data from 2019 are not directly comparable with estimates in previous years due to changes in the National Youth Tobacco Survey (NYTS) format from paper to electronic.