Table 1.
Weighted proportions and univariate associations of Wave 2 outcomes and imputed Wave 1 predictors by e-cigarette non-susceptible and susceptible youth in the PATH Study (n = 5156; N = 10,442,792).
| Total na | Total % (95% CI) | Non-susceptible to E-cigarette use % (95% CI) | Susceptible to E-cigarette useb % (95% CI) | Unadjusted OR (95% CI) | |
|---|---|---|---|---|---|
| Wave 1 variables | |||||
| Susceptible to cigarettes | 1200 | 22.7 (21.5−23.9) | 10.1 (9.1−11.1) | 66.9 (64.0–69.8) | 17.96 (15.16–21.28) |
| Grades B/C or lower | 1468 | 27.1 (25.8−28.3) | 24.9 (23.5−26.3) | 34.5 (31.6–37.4) | 1.58 (1.36–1.84) |
| Less perceived harm E-cigarette | 2896 | 47.0 (45.5−48.5) | 42.2 (40.5−44.0) | 63.6 (60.5–66.6) | 2.39 (2.05–2.78) |
| Family uses tobacco | 1596 | 30.1 (28.7−31.4) | 28.5 (27.0−29.9) | 35.7 (32.7–38.6) | 1.40 (1.20–1.62) |
| Secondhand smoke exposure | 1683 | 32.3 (30.9−33.6) | 28.9 (27.4−30.4) | 43.9 (40.8–47.0) | 1.92 (1.66–2.22) |
| Sensation seeking, mean (SE)c | 2.38 (0.01) | 2.37 (0.01) | 2.27 (0.01) | 2.72 (0.03) | 1.83 (1.69–1.99) |
| Favorite tobacco ad | 289 | 5.6 (4.9−6.3) | 4.6 (3.9−5.3) | 8.9 (7.1–10.8) | 2.02 (1.54–2.65) |
| Recall of E-cigarette ads | 1559 | 29.5 (28.2−30.8) | 27.2 (25.7−28.6) | 37.8 (34.8–40.8) | 1.63 (1.41–1.89) |
| Female | 2423 | 46.8 (45.4−48.3) | 47.7 (46.1−49.4) | 43.8 (40.8–46.9) | 0.86 (0.74–0.98) |
| 15 to 17 years old | 1559 | 30.4 (29.1−31.8) | 29.3 (27.8−30.8) | 34.4 (31.5–37.3) | 1.26 (1.09–1.47) |
| Race/ethnicity | |||||
| White | 2417 | 53.0 (51.6−54.5) | 54.2 (52.6−55.9) | 48.7 (45.6–51.8) | Ref |
| African American | 773 | 15.1 (14.1−16.2) | 14.7 (13.5−15.9) | 16.7 (14.4–19.0) | 1.27 (1.03–1.55) |
| Hispanic | 1494 | 22.4 (21.3−23.5) | 21.0 (19.7−22.2) | 27.3 (24.8–29.8) | 1.45 (1.24–1.70) |
| Other | 472 | 9.5 (8.5−10.4) | 10.1 (9.0−11.2) | 7.3 (5.6–8.9) | 0.81 (0.61–1.07) |
| Parent education | |||||
| High school/GED or less | 2037 | 35.9 (34.5−37.3) | 35.1 (33.6−36.7) | 38.6 (35.7–41.6) | Ref |
| Some college | 1636 | 31.5 (30.2−32.9) | 32.0 (30.4−33.5) | 29.9 (27.1–32.7) | 0.85 (0.72−1.01) |
| Bachelor’s or higher | 1483 | 32.6 (31.2−34.0) | 32.9 (31.3−34.5) | 31.5 (28.5–34.4) | 0.87 (0.74–1.03) |
| Wave 2 outcomes | |||||
| Initiate E-cigarette use | 259 | 5.1 (4.4−5.7) | 3.1 (2.6−3.7) | 11.9 (9.8−13.9) | 4.20 (3.20−5.50) |
| Past 30 day E-cigarette use | 62 | 1.2 (0.9−1.5) | 0.6 (0.4−0.9) | 3.3 (2.2−4.4) | 5.53 (3.24−9.41) |
| Initiate cigarette use | 110 | 2.1 (1.7−2.5) | 1.3 (0.9−1.6) | 5.0 (3.7−6.4) | 4.18 (2.80−6.24) |
| Past 30 day cigarette use | 48 | 0.9 (0.7−1.2) | 0.5 (0.3−0.7) | 2.4 (1.5−3.3) | 4.86 (2.66−8.86) |
| Initiate marijuana use | 236 | 4.4 (3.8−4.9) | 2.9 (2.4−3.5) | 9.4 (7.6−11.1) | 3.42 (2.58−4.54) |
| Initiate alcohol use | 660 | 13.2 (12.2−14.2) | 10.9 (9.8−11.9) | 21.4 (18.8−23.9) | 1.85−2.68) |
a
n represents the imputed, unweighted sample size for Wave 1 variables. Wave 2 variable total sample sizes (n) were not imputed and unweighted.
b
The imputed, unweighted sample size (n) of e-cigarette susceptible youth was 1175.
c
Sensation seeking is a continuous mean score with a range of 1–5. Under the total column, the mean (SE) is imputed, yet unweighted.