Table 2.
Hierarchical regression analyses: frequency of marijuana use
| Step | ΔR2 | t | β | sr2 | p |
| Step 1 | .11 | <.001 | |||
| Cigs/day | 1.35 | .11 | .00 | ns | |
| Alcohol | 3.43 | .30 | .01 | <.001 | |
| Gender | −0.49 | −.04 | .08 | ns | |
| Step 2 | .03 | <.001 | |||
| MASQ-AA | 2.24 | .19 | .04 | <.05 | |
| Step 1 | .09 | <.01 | |||
| Cigs/day | 0.92 | .08 | .00 | ns | |
| Alcohol | 3.14 | .28 | .01 | <.01 | |
| Gender | −0.51 | −. 5 | .07 | ns | |
| Step 2 | .00 | ns | |||
| MASQ-AD | 0.19 | .02 | .00 | ns |
Notes: β = standardized beta weight provided for hierarchical multiple regression; F = change in F statistic provided for hierarchical multiple regression (only one F statistic is reported for each step); cigs/day = average number of cigarettes smoked per day; alcohol = alcohol consumption (Frequency × Quantity); coping motives = Marijuana Motives Measure—coping subscale (Simons et al., 1998); MASQ-AA = Mood and Anxiety Symptom Questionnaire—anxious arousal subscale (Watson et al., 1995)