Table 1.
Bivariate Correlation Coefficients of Study Variables among All Participants
| r | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 14 | 15 | ||
| 1. | Past-year Prescription Stimulant Misuse (1 vs. 0) | — | |||||||||||||
| 2. | Male Sex (1 vs. 0) | −.02 | — | ||||||||||||
| 3. | Age | .03 | .11 | — | |||||||||||
| 4. | White Race (1 vs. 0) | −.04 | .07 | −.13 | — | ||||||||||
| 5. | Lifetime ADHD Diagnosis (1 vs. 0) | .09 | .03 | −.04 | .16 | — | |||||||||
| 6. | Depression | .18 | −.11 | .06 | .04 | .14 | — | ||||||||
| 7. | Anxiety | .12 | −.18 | −.02 | .19 | .17 | .70 | — | |||||||
| 8. | Sensation Seeking | .12 | .10 | .02 | .05 | .19 | .18 | .15 | — | ||||||
| 9. | Performance Goal Orientation | −.05 | −.08 | −.13 | .07 | .03 | −.05 | .05 | −.04 | — | |||||
| 10. | Descriptive Peer Norms | .12 | .06 | .22 | .09 | .07 | .27 | .19 | .18 | .03 | — | ||||
| 11. | Injunctive Peer Norms | .05 | .13 | .20 | .12 | −.02 | .21 | .09 | .10 | −.06 | .45 | — | |||
| 12. | Parental Monitoring | −.17 | −.06 | −.12 | .14 | −.00 | −.18 | −.08 | −.09 | .21 | −.05 | −.13 | — | ||
| 13. | Past-year Alcohol Frequency | .20 | .05 | .19 | .22 | .10 | .08 | .17 | .17 | −.05 | .29 | .37 | .04 | — | |
| 14. | Past-year Cannabis Frequency | .09 | −.09 | .06 | .19 | .24 | .01 | .12 | .04 | .25 | .34 | .17 | .20 | .55 | — |
| 15. | Cigarette User Status (1 vs. 0) | .20 | .09 | .06 | .01 | .05 | .16 | .13 | .19 | −.02 | .07 | .06 | −.12 | −.02 | .04 |
Note. N = 106–414 due to lifetime alcohol abstainers (58% of sample) and cannabis abstainers (73% of sample). Pearson’s correlation coefficients are reported for correlations between two continuous variables; Spearman’s coefficients (rs) are reported for correlations between a continuous and dichotomous variable; Phi coefficients (rφ) are reported for correlations between two dichotomous variables. Significant correlation coefficients at p < .05 are highlighted in bold font.