Table 1.
The effect of truancy on the initiation of marijuana use
| Variable | Unadjusted effects OR (95% CI) | Adjusted effects OR (95% CI) |
| Age 13a | 0.01 (0.00-0.21) | |
| Age 13.5a | 0.02 (0.01-0.07) | |
| Age 14a | 0.04 (0.02-0.07) | |
| Age 14.5a | 0.03 (0.02-0.05) | |
| Age 15a | 0.06 (0.04-0.09) | |
| Age 15.5a | 0.02 (0.01-0.03) | |
| Age 16a | 0.02 (0.01-0.03) | |
| Age 16.5a | 0.02 (0.01-0.04) | |
| Gender, male compared with female | 0.57 (0.38-0.84) | |
| Black, compared with white | 0.94 (0.54-1.63) | |
| Hispanic, compared with white | 0.49 (0.24-1.03) | |
| Low parent education | 1.05 (0.97-1.13) | 1.02 (0.93-1.12) |
| Family lives in poverty | 1.27 (0.93-1.74) | 1.08 (0.73-1.60) |
| Truancy at ages 13/14 years | 3.96 (2.78-5.65) | 3.07 (2.09-4.50) |
| Truancy at age 15 years | 2.22 (1.80-2.75) | 1.64 (1.29-2.09) |
| Truancy at age 16 years | 1.79 (1.45-2.20) | 1.38 (1.10-1.73) |
| Low school commitment | 4.77 (2.99-7.61) | 1.16 (0.67-2.00) |
| Low grade-point average | 2.17 (1.75-2.70) | 1.72 (1.31-2.26) |
| Peer positive reactions to delinquency | 5.10 (3.20-8.11) | 2.39 (1.32-4.35) |
| Student's delinquent values | 4.95 (3.22-7.59) | 2.36 (1.37-4.09) |
| Student's involvement in delinquency at baseline | 1.61 (1.39-1.86) | 1.38 (1.14-1.68) |
| Poor parental monitoring | 2.29 (1.22-4.28) | 1.04 (0.47-2.31) |
| Low affective ties to child | 2.25 (1.62-3.13) | 0.99 (0.57-1.73) |
| Low positive parenting | 1.51 (1.11-2.05) | 1.21 (0.84-1.73) |
Notes: Unadjusted effects assess truancy's and each potential confounder's effect adjusting only for age, gender, and race/ethnicity. Adjusted effects assess truancy's and each potential confounder's effect adjusting for all other variables.
a
The coefficients for the age variables are multiple intercepts and represent odds not odds ratios.