Table 2.
Outcome: Past 30-day e-cigarette use with nicotine at 12-month follow-up | |||||
Entire sample | Hispanic | White | Black | Other a | |
AORb (95% CI) | AORb (95% CI) | AORb (95% CI) | AORb (95% CI) | AORb (95% CI) | |
Total n | n=2,307 | n=875 | n=710 | n=344 | n=378 |
Comorbidityc | 1.58* (1.06, 2.37) | 1.15 (0.57, 2.31) | 1.59 (0.84, 3.01) | 0.80 (0.79, 8.11) | 4.30** (1.58, 11.68) |
Depressiond | 1.45* (1.02, 2.08) | 1.10 (0.60, 2.01) | 1.47 (0.83, 2.62) | 1.49 (0.24, 9.24) | 3.52** (1.42, 8.69) |
Anxietye | 1.65** (1.14, 2.39) | 1.38 (0.73, 2.62) | 1.56 (0.88, 2.75) | 1.82 (0.30, 11.03) | 3.27* (1.25, 8.52) |
Outcome: Past 30-day e-cigarette use with THC at 12-month follow-up | |||||
Entire sample | Hispanic | White | Black | Other a | |
AORf (95% CI) | AORf (95% CI) | AORf (95% CI) | AORf (95% CI) | AORf (95% CI) | |
Total n | n=2,307 | n=875 | n=710 | n=344 | n=378 |
Comorbidityc | 1.51* (1.03, 2.20) | 1.03 (0.56, 1.88) | 3.24** (1.53, 6.85) | 1.00 (0.34, 2.91) | 2.02 (0.76, 5.31) |
Depressiond | 1.58** (1.14, 2.20) | 1.42 (0.86, 2.33) | 2.52** (1.27, 4.99) | 0.66 (0.24, 1.78) | 2.55* (1.13, 5.75) |
Anxietye | 1.21 (0.84, 1.73) | 0.83 (0.46, 1.49) | 2.05* (1.04, 4.04) | 1.08 (0.41, 2.81) | 1.55 (0.62, 3.87) |
“Other” is heterogeneous; it includes Asian, American Indian or Alaska Native (AIAN), Native Hawaiian or other Pacific Islander (NHOPI), among other racial identities.
Adjusted for grade level, gender, SES, and Wave 9 (baseline) past 30-day use of e-cigarettes with nicotine, marijuana in any form, alcohol, and combustible tobacco. Entire sample additionally includes adjustment for race/ethnicity.
Comorbidity is symptoms of depression and anxiety present at Wave 9 (baseline).
Symptoms of depression measured at Wave 9 (baseline) using the PHQ-9, with scores ≥10 indicating a positive screen for depression symptoms.
Symptoms of anxiety measured at Wave 9 (baseline) using the GAD-7, with scores ≥10 indicating a positive screen for anxiety symptoms.
Adjusted for grade level, gender, SES, and Wave 9 (baseline) past 30-day use of e-cigarettes with THC, marijuana in any other form, alcohol, and combustible tobacco. Entire sample additionally includes adjustment for race/ethnicity.
Adjusted for grade level, gender, SES, and Wave 9 (baseline) past 30-day use of e-cigarette with nicotine, e-cigarettes with THC, marijuana in any other form, alcohol, and combustible tobacco. Entire sample additional includes adjustment for race/ethnicity.
Boldface indicates statistical significance (*p<0.05, **p<0.01, ***p<0.001).
Referent group is no symptoms of anxiety or depression.
AOR, adjusted odds ratio; CI, confidence interval; PNP, perfect association with no past 30-day e-cigarette use.