Table 3.
Auto-Regressive Lag Model Estimation Results
| Variables | Model 1: STS vs. BI-Y + BI-YP | Model 2: STS vs. BI-Y | ||||
|---|---|---|---|---|---|---|
| Estimate | S.E. | Est./S.E. | Estimate | S.E. | Est./S.E. | |
| 18-Month Follow-Up Marijuana Use ON | ||||||
| 12-Month Follow-Up Marijuana Use | 0.558*** | 0.095 | 5.848 | 0.547*** | 0.115 | 4.742 |
| Gender (1 = Female) | -0.849* | 0.413 | -2.054 | |||
| Intervention (1 = Intervention Condition[s]) | -0.490+ | 0.277 | -1.767 | -0.841** | 0.323 | -2.599 |
| 12-Month Follow-Up Marijuana Use ON | ||||||
| 6-Month Follow-Up Marijuana Use | 0.838*** | 0.107 | 7.838 | 0.821*** | 0.131 | 6.261 |
| Intervention | -0.041 | 0.277 | -0.148 | -0.074 | 0.323 | -0.229 |
| 6-Month Follow-Up Marijuana Use ON | ||||||
| 3-Month Follow-Up Marijuana Use | 0.861*** | 0.110 | 7.839 | 0.855*** | 0.131 | 6.508 |
| Age | 0.308*** | 0.070 | 4.386 | 0.317*** | 0.086 | 3.669 |
| Intervention | 0.053 | 0.233 | 0.229 | 0.101 | 0.260 | 0.388 |
| 3-Month Follow-Up Marijuana Use ON | ||||||
| Baseline Marijuana Use | 0.727*** | 0.106 | 6.880 | 0.624*** | 0.120 | 5.209 |
| Intervention | 0.180 | 0.229 | 0.786 | 0.003 | 0.255 | 0.010 |
| Gender × Intervention | -0.488 | 0.411 | -1.190 | -0.009 | 0.446 | -0.020 |
| Age | 0.039 | 0.071 | 0.557 | 0.033 | 0.085 | 0.381 |
| Baseline Marijuana Use ON | ||||||
| Age | 0.174*** | 0.051 | 3.433 | 0.147* | 0.061 | 2.407 |
| Gender | -0.069 | 0.269 | -0.255 | -0.055 | 0.266 | -0.205 |
| Family Income Level | 0.017 | 0.066 | 0.261 | -0.010 | 0.082 | -0.120 |
| Who Youth Lives With (1=Mother Only) | 0.189 | 0.163 | 1.161 | 0.305 | 0.212 | 1.437 |
| African-American (1 = African-American) | 0.213 | 0.194 | 1.097 | 0.101 | 0.242 | 0.416 |
| Hispanic (1 = Hispanic) | -0.090 | 0.181 | -0.500 | 0.106 | 0.224 | 0.474 |
| Family Experience of Stress/Trauma | -0.006 | 0.043 | -0.135 | -0.007 | 0.052 | -0.143 |
Note. Two-tailed p-values:
*
p < .05;
**
p < .01;
***
p < .001.
+
Significant at p<.05 for a one-tailed test.