Table 2.
Correlation matrix of all study variables.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. CP | 1.00 | −.27 | .41 | N/A | .16 | .27 | .36 | .55 | .39 | .31 | .49 | −.02 | .00 | .00 | −.02 | .06 | .15 | .10 | .16 |
| 2. Alternative Reinforcers | −.19 | 1.00 | −.45 | N/A | −.11 | −.18 | −.28 | −.36 | −.24 | −.22 | −.37 | −.02 | −.02 | .02 | −.01 | −.05 | −.09 | −.03 | −.09 |
| 3. Complementary Reinforcers | .42 | −.45 | 1.00 | N/A | .13 | .25 | .35 | .41 | .21 | .19 | .52 | −.02 | .00 | .03 | −.06 | .04 | .06 | .03 | .08 |
| 4. Past 6-month Any Substance Use | .39 | −.13 | .24 | 1.00 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 5. Past 6-month Alcohol Use | .37 | −.13 | .26 | .69 | 1.00 | .10 | .13 | .28 | .40 | .13 | .16 | −.04 | −.06 | −.05 | .04 | −.01 | .08 | .06 | .08 |
| 6. Past 6-month Cigarette Use | .31 | −.13 | .29 | .32 | .29 | 1.00 | .24 | .34 | .22 | .45 | .24 | .02 | .01 | .05 | .02 | .02 | .10 | .06 | .10 |
| 7. Past 6-month Marijuana Use | .43 | −.20 | .40 | .53 | .44 | .36 | 1.00 | .45 | .26 | .21 | .60 | −.01 | .05 | −.03 | −.06 | .06 | .05 | .02 | .07 |
| 8. Past 30 Day Any Use Frequency | .52 | −.32 | .41 | .25 | .37 | .37 | .49 | 1.00 | .76 | .67 | .76 | −.03 | −.02 | .00 | −.02 | .01 | .16 | .06 | .11 |
| 9. Past 30 Day Alcohol Frequency | .43 | −.18 | .28 | .41 | .56 | .32 | .42 | .78 | 1.00 | .38 | .45 | −.04 | −.04 | .02 | −.01 | .04 | .14 | .03 | .10 |
| 10. Past 30 Day Cigarette Frequency | .30 | −.14 | .21 | .19 | .22 | .48 | .38 | .66 | .41 | 1.00 | .31 | −.02 | −.03 | .01 | −.01 | −.01 | .16 | .10 | .16 |
| 11. Past 30 Day Marijuana Frequency | .48 | −.24 | .53 | .36 | .36 | .33 | .66 | .77 | .53 | .35 | 1.00 | −.03 | .01 | .02 | −.03 | .03 | .05 | .02 | .01 |
| 12. Sex | −.02 | .02 | −.01 | .02 | −.02 | .02 | .00 | −.02 | −.01 | −.01 | −.01 | 1.00 | .22 | .05 | −.01 | .04 | −.26 | −.05 | −.16 |
| 13. Ethnicity | .03 | −.01 | .03 | .01 | −.03 | .01 | .03 | −.03 | −.02 | −.02 | .01 | .47 | 1.00 | .22 | −.02 | .07 | −.02 | −.02 | −.04 |
| 14. Parental Education | −.08 | .01 | −.05 | −.11 | −.10 | −.01 | −.07 | .02 | −.07 | .02 | −.05 | .04 | .23 | 1.00 | .01 | .05 | −.08 | −.08 | −.08 |
| 15. Peer Substance Use | −.01 | −.01 | −.02 | −.01 | −.03 | .01 | −.03 | −.03 | .00 | −.01 | −.02 | .44 | .25 | −.09 | 1.00 | .00 | .00 | .02 | −.03 |
| 16. Impulsivity | .05 | −.03 | .07 | .06 | .03 | .03 | .06 | .03 | .05 | .01 | .05 | .19 | .15 | .05 | .13 | 1.00 | −.02 | .02 | −.02 |
| 17. MDD | .21 | −.10 | .08 | .13 | .15 | .10 | .10 | .15 | .14 | .12 | .07 | −.20 | .01 | −.04 | −.03 | .00 | 1.00 | .43 | .51 |
| 18. GAD | .16 | −.01 | .08 | .13 | .07 | .08 | .08 | .07 | .07 | .08 | .05 | −.05 | −.01 | −.04 | −.01 | −.02 | .42 | 1.00 | .37 |
| 19. PD | .19 | −.07 | .09 | .13 | .11 | .09 | .10 | .11 | .11 | .12 | .06 | −.12 | .00 | −.05 | −.01 | −.01 | .49 | .37 | 1.00 |
Note. All coefficients are Pearson correlations except the correlation between Parental Education and all other variables are Spearman correlations, as Parental Education is an ordinal variable. Values above the diagonal represent correlations between study variables among those who reported past six-month any substance use (N = 890). Values below the diagonal represent correlations between study variables among the overall sample (N = 3,383). Shaded cells note correlations that were not statistically significant at p < .05. MDD = Major Depressive Disorder; GAD = Generalized Anxiety Disorder;