Table 2.
Percentage of P30D Cannabis Use at Each Follow-Up Wave by Baseline Covariates
| Covariates at corresponding baseline wave | Wave 1 % (95% CI) |
Wave 2 % (95% CI) |
Wave 3 % (95% CI) |
|---|---|---|---|
|
| |||
| Overall P30D cannabis use at follow-up waves | 2.3 (1.8, 2.9) | 2.4 (2.0, 2.9) | 3.2 (2.9, 3.6) |
| P30D e-cigarette use | |||
| Yes | 13.8 (4.3, 36.1) | 9.7 (4.3, 20.2) | 26.3 (18.0, 36.7) |
| No | 2.2 (1.8, 2.8) | 2.4 (2.0, 2.8) | 2.9 (2.6, 3.2) |
| Internalizing mental health problems | |||
| Low | 1.3 (0.9, 1.9) | 1.9 (1.5, 2.5) | 2.7 (2.2, 3.2) |
| Moderate | 2.4 (1.7, 3.4) | 2.3 (1.7, 3.1) | 3.1 (2.4, 4.0) |
| High | 5.1 (3.7, 7.1) | 4.2 (3.1, 5.7) | 4.9 (4.0, 6.0) |
| Externalizing mental health problems | |||
| Low | 1.1 (0.7, 1.8) | 1.9 (1.4, 2.6) | 2.3 (1.8, 2.8) |
| Moderate | 2.1 (1.4, 3.0) | 1.9 (1.3, 2.7) | 3.3 (2.6, 4.2) |
| High | 4.4 (3.3, 5.9) | 3.7 (2.9, 4.7) | 4.7 (3.9, 5.7) |
| Age group, years | |||
| 12‒14 | 2.3 (1.8, 2.9) | 2.0 (1.6, 2.5) | 2.4 (2.0, 2.8) |
| 15‒17 | 2.4 (0.8, 6.8) | 3.9 (3.0, 5.2) | 4.8 (4.0, 5.6) |
| Sex | |||
| Male | 1.8 (1.3, 2.6) | 2.4 (1.9, 3.0) | 3.0 (2.5, 3.7) |
| Female | 2.8 (2.1, 3.6) | 2.5 (1.9, 3.2) | 3.4 (2.8, 4.0) |
| Race/ethnicity | |||
| Non-Hispanic White | 2.4 (1.8, 3.2) | 2.6 (2.0, 3.3) | 3.7 (3.1, 4.3) |
| Non-Hispanic Black | 3.5 (2.1, 5.8) | 1.8 (1.1, 3.1) | 3.2 (2.2, 4.8) |
| Non-Hispanic other | 0.8 (0.3, 2.6) | 2.3 (1.2, 4.1) | 1.2 (0.6, 2.1) |
| Hispanic | 1.9 (1.2, 2.8) | 2.4 (1.8, 3.3) | 3.2 (2.6, 4.1) |
| Sexual orientation (ages ≥14 years) | |||
| Straight/heterosexual | 3.4 (2.6, 4.5) | 3.5 (2.8, 4.2) | 4.3 (3.7, 5.0) |
| Gay, lesbian, bisexual, or other | 7.9 (2.9, 19.9) | 5.6 (2.6, 11.4) | 6.1 (4.1, 8.9) |
| P30D combustible tobacco usea | |||
| Yes | 12.9 (4.5, 31.7) | 14.8 (6.8, 29.4) | 18.9 (10.8, 31.0) |
| No | 2.3 (1.8, 2.9) | 2.4 (2.0, 2.8) | 3.1 (2.7, 3.4) |
| P30D alcohol use | |||
| Yes | 11.4 (5.5, 22.3) | 10.9 (7.8, 15.1) | 12.1 (8.5, 17.1) |
| No | 2.2 (1.7, 2.7) | 2.1 (1.7, 2.6) | 2.8 (2.5, 3.2) |
| Parental education | |||
| Less than high school | 4.2 (3.2, 5.7) | 2.1 (1.3, 3.2) | 3.9 (3.0, 4.9) |
| High school graduate | 2.1 (1.2, 3.5) | 2.3 (1.4, 3.6) | 3.2 (2.3, 4.5) |
| Some college or associate degree | 2.0 (1.3, 3.0) | 3.4 (2.5, 4.5) | 3.5 (2.9, 4.3) |
| Bachelor’s degree or higher | 1.8 (1.2, 2.7) | 1.9 (1.3, 2.7) | 2.6 (2.1, 3.3) |
| State recreational cannabis law | |||
| Legalized | 3.4 (1.6, 7.3) | 2.9 (1.3, 6.4) | 3.4 (2.6, 4.4) |
| Not legalized | 2.2 (1.8, 2.8) | 2.4 (2.0, 2.9) | 3.2 (2.6, 4.4) |
a
Combustible tobacco included cigarette, cigar, cigarillo, and filtered cigar.
P30D, past-30-day.