Table 8.
Contributions to ANOVA models of substance use outcomes.
| At Risk Alcohol | Binge alcohol | Cannabis use | ||||
|---|---|---|---|---|---|---|
| Tested covariates | F | (R2) | F | (R2) | F | (R2) |
| BRIEF alone | 13.7*** | (0.070) | 7.4** | (0.126) | 10.3** | (0.141) |
| Risk alone | 40.5 *** | (0.102) | 14.1*** | (0.134) | 28.6*** | (0.162) |
| Risk with BRIEF | 27.6*** | (0.103) | 8.2** | (0.134) | 19.1*** | (0.162) |
| BRIEF with risk | 1.3 | 1.5 | 1.1 | |||
| Sleep alone | 5.6* | (0.059) | 3.9* | (0.122) | 5.8* | (0.136) |
| Sleep with BRIEF | 1.6 | (0.070) | 1.4 | (0.126) | 2.1 | (0.143) |
| BRIEF with sleep | 9.7** | 4.8* | 6.6** | |||
| BRIEF with risk and sleep | 0.7 | (0.103) | 0.8 | (0.135) | 0.4 | (0.163) |
| Risk with BRIEF and sleep | 27.0*** | 7.8** | 18.5*** | |||
| Sleep with BRIEF and risk | 1.0 | 1.1 | 1.6 | |||
Adjusted R2 for the model; F-statistic with d.f. 1, 701; covariates: sex, age, SES;
*
p < 0.05,
**
p < 0.01,
***
p < 0.001; BRIEF, BRIEF Global Composite; Risk, NCANDA Risk Density; Sleep, Sleep Quality; At Risk Alcohol, At Risk Alcohol Frequency (Past Year); Binge Alcohol, Age Defined Binge Alcohol Use (Past Year); Marijuana Use, Marijuana Use (Past Year).