Table 3.
Results of Hierarchical Logistic Regression Models on 30-Day Substance Use by Grade Level
| 6th grade | 8th grade | 10th grade | 12th grade | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Dependent Variable | Independent Variables | Coeff | OR | Coeff | OR | Coeff | OR | Coeff | OR |
| Cigarette Use | |||||||||
| Intercept | -4.38*** | 0.01 | -2.76*** | 0.06 | -1.78*** | 0.17 | -1.24*** | 0.29 | |
| Gender | -0.35* | 0.70 | -0.38*** | 0.68 | -0.21*** | 0.81 | -0.20*** | 0.82 | |
| Free Lunch | 0.40*** | 1.49 | 0.35*** | 1.42 | 0.37*** | 1.45 | 0.21*** | 1.23 | |
| Family-level Prot | -1.05*** | 0.35 | -0.70*** | 0.50 | -0.91*** | 0.40 | -0.45*** | 0.64 | |
| School-level Prot | -0.24 | 0.79 | -0.98** | 0.38 | -0.08 | 0.92 | -0.01 | 0.99 | |
| S X F Interaction | 0.06 | 1.06 | -0.11 | 0.90 | -2.05*** | 0.13 | -0.50 | 0.61 | |
| FL X F Interaction | 0.22** | 1.25 | 0.12* | 1.13 | -0.01 | 0.99 | 0.05 | 1.05 | |
| Alcohol Use | |||||||||
| Intercept | -3.44*** | 0.03 | -1.67*** | 0.19 | -0.50*** | 0.61 | -0.13+ | 0.88 | |
| Gender | 0.14 | 1.15 | -0.08 | 0.92 | -0.06 | 0.94 | 0.02 | 1.02 | |
| Free Lunch | 0.11 | 1.12 | 0.07 | 1.07 | 0.04 | 1.04 | 0.03 | 1.03 | |
| Family-level Prot | -0.41** | 0.66 | -0.45*** | 0.64 | -0.69*** | 0.50 | -0.38*** | 0.68 | |
| School-level Prot | 0.14 | 1.15 | -0.91*** | 0.40 | 0.03 | 1.03 | 0.00 | 1.00 | |
| S X F Interaction | -0.63 | 0.53 | -0.27 | 0.76 | -1.62*** | 0.20 | -1.09*** | 0.34 | |
| FL X F Interaction | 0.07 | 1.07 | 0.05 | 1.05 | 0.00 | 1.00 | -0.04 | 0.96 | |
| Marijuana Use | |||||||||
| Intercept | -6.47*** | 0.01 | -3.99*** | 0.02 | -2.50*** | 0.08 | -2.07*** | 0.13 | |
| Gender | 0.27 | 1.31 | 0.07 | 1.07 | 0.18** | 1.20 | 0.24*** | 1.27 | |
| Free Lunch | 0.27 | 1.31 | 0.21* | 1.23 | -0.03 | 0.97 | -0.10 | 0.90 | |
| Family-level Prot | -0.07*** | 0.93 | -0.73*** | 0.48 | -0.80*** | 0.45 | -0.49*** | 0.61 | |
| School-level Prot | -0.21 | 0.81 | -0.79* | 0.45 | -0.32 | 0.73 | -0.41 | 0.66 | |
| S X F Interaction | 0.03 | 1.03 | -0.11 | 0.90 | -1.90*** | 0.15 | -1.15*** | 0.32 | |
| FL X F Interaction | 0.09 | 1.09 | 0.06 | 1.06 | -0.09* | 0.91 | -0.01 | 0.99 | |
all models estimated using SAS proc glimmix; distribution = binary.; G-side random effects only. Coeff = unstandardized beta coefficient; OR = odds ratio; Prot = Protection; S X F = school-level protection by family-level protection interaction, FL X F Interaction = Free lunch by family-level protection interaction.
*
p < .05
**
p < .01
***
p < .001