Table 3.
Polynomial Contrasts
| Cannabis use
|
Heavy drinking
|
|||||
|---|---|---|---|---|---|---|
| Estimate | SE | p | Estimate | SE | p | |
| Stress markers (age 19) | ||||||
| Catecholamines | .423 | 0.18 | .017 | .350 | 0.26 | .174 |
| Perceived stress | .236 | 0.10 | .017 | .480 | 0.14 | .001 |
| Risk factors (age 16) | ||||||
| Composite | 0.49 | 0.07 | .000 | 0.62 | 0.09 | .000 |
| Negative academic orientation | 5.28 | 0.97 | .000 | 4.87 | 1.39 | .001 |
| Racial discrimination | 1.18 | 0.34 | .001 | 2.16 | 0.47 | .000 |
| Deviant peer affiliation | 0.19 | 0.03 | .000 | 0.21 | 0.04 | .000 |
| Parent-child arguing | 2.23 | 0.46 | .000 | 3.11 | 0.65 | .000 |
| Risk factors (age 19) | ||||||
| Composite | 0.27 | 0.05 | .000 | 0.15 | 0.08 | .048 |
| Negative academic orientation | 3.95 | 0.94 | .000 | 1.78 | 1.36 | .192 |
| Racial discrimination | 0.81 | 0.30 | .000 | 0.91 | 0.43 | .034 |
| Deviant peer affiliation | 0.21 | 0.03 | .000 | 0.10 | 0.04 | .000 |
| Parent-child arguing | 0.02 | 0.51 | .974 | 0.45 | 0.74 | .541 |
Note. Class means and group difference comparisons are shown in Table 4.