Unadjusted OR (95% CI) | Multivariable Adjusted ORb (95% CI) | |||
---|---|---|---|---|
Model 1c | Model 2d | Model 3e | ||
Demographic Characteristics | ||||
Age (yrs) | ||||
16–17 | Ref | Ref | Ref | Ref |
18–19 | 2.17 (1.12, 4.19) | 1.34 (0.61, 2.97) | 1.19 (0.57, 2.52) | 1.21 (0.57, 2.57) |
Gender | ||||
Female | Ref | Ref | Ref | Ref |
Male | 1.66 (1.02, 2.71) | 1.81 (0.99, 3.32) | 1.64 (0.93, 2.89) | 1.58 (0.88, 2.80) |
Household income | ||||
0 < $25,000 | Ref | Ref | Ref | Ref |
$25,001 < $50,000 | 0.71 (0.40, 1.27) | 0.90 (0.45, 1.82) | 0.90 (0.47, 1.74) | 0.85 (0.44, 1.67) |
$51,001 < $75,000 | 0.59 (0.30, 1.187) | 0.79 (0.35, 1.81) | 0.62 (0.28, 1.38) | 0.55 (0.24, 1.25) |
$75,001 and more | 0.45 (0.24, 0.84) | 0.42 (0.20, 0.92) | 0.47 (0.24, 0.93) | 0.46 (0.23, 0.92) |
Substance use | ||||
Self-reported marijuana use | ||||
Beyond a year/Never | Ref | Ref | ||
Over a month | 3.45 (1.69, 7.02) | 3.31 (1.48, 6.64) | ||
Past month | 2.93 (1.13, 7.60) | 2.38 (0.84, 6.74) | ||
Past 2 days | 8.42 (3.11, 22.78) | 8.28 (2.88, 23.81) | ||
Past 24 h | 38.51 (18.20, 81.46) | 40.21 (18.02, 89.74) | ||
Current Marijuana Use | ||||
Beyond a year/Never | Ref | Ref | Ref | |
Used in last year | 5.60 (3.23, 9.73) | 5.28 (3.01, 9.24) | ||
Tobacco use | ||||
Beyond a year/Never | Ref | Ref | Ref | |
Current user | 4.22 (2.56, 6.96) | 1.81 (1.02, 3.23) | 2.05 (1.13, 3.70) | |
Self-reported age at first alcohol use (yrs) | ||||
Does not drink/After 15 | Ref | Ref | Ref | |
≤ 15 | 3.02 (1.70 5.38) | 2.17 (1.12, 4.19) | 2.27 (1.13, 3.70) | |
Time of year | ||||
June–August | Ref | Ref | ||
September–March | 2.84 (1.57, 5.16) | 3.18 (1.60, 6.21) |