Table 3.
Linear regression model predicting number of cannabis-related problems
| Variable | B | β | t | p | sr2 |
| Sexa | -0.41 | -.07 | -1.10 | .272 | .00 |
| Frequency of self-cannabis use | 0.79 | .27 | 2.74 | .007 | .03 |
| Descriptive norms (friends) | 0.32 | .11 | 1.33 | .183 | .01 |
| Injunctive norms (friends) | -0.07 | -.03 | -0.31 | .756 | .00 |
| Positive expectancies | 0.04 | .01 | 0.18 | .861 | .00 |
| Social motives | 0.04 | .01 | 0.16 | .875 | .00 |
| Coping motives | 1.15 | .39 | 4.83 | <.001 | .08 |
| Enhancement motives | -0.40 | -.14 | -1.54 | .125 | .01 |
| Expansion motives | -0.37 | -.13 | -1.68 | .094 | .01 |
a
Sex was dummy coded such that 0 = male and 1 = female.