Table 3 Hierarchical regression of the intention to avoid sex when intoxicated
| Â | Â | Step1 | Step 2 | Step 3 | Step 4 | ||||
|---|---|---|---|---|---|---|---|---|---|
r | b | β | b | β | b | β | b | β | |
Avoid sex when intoxicated | |||||||||
 Attitude | .227** | -.00 | -.00 | -.07 | -.09 | -.06 | -.08 | -.07 | -.08 |
 Subjective norm | .460** | .37 | .38*** | .19 | .20*** | .20 | .20*** | .20 | .20*** |
 Perceived behavioural control | .312** | .21 | .19*** | .20 | .18*** | .20 | .18*** | .19 | .17*** |
Reduce alcohol and marijuana use | |||||||||
 Attitude | .226** |  |  | .08 | .07 | .07 | .07 | .07 | .06 |
 Subjective norm | .492** |  |  | .15 | .14*** | .14 | .13** | .13 | .13** |
 Perceived behavioural control | .171** |  |  | -.04 | -.03 | -.04 | -.03 | -.04 | .03 |
 Intention | .580** |  |  | .40 | .39*** | .41 | .40*** | .41 | .39*** |
Responsible manhood | |||||||||
 Attitude | .107* |  |  |  |  | .03 | .05 | .03 | .05 |
 Subjective norm | .011 |  |  |  |  | .03 | .06 | .03 | .07 |
 Perceived behavioural control | .122* |  |  |  |  | .00 | .13 | .00 | .00 |
 Intention | .145** |  |  |  |  | -.00 | -.00 | .00 | .00 |
Demographic and past behaviour | |||||||||
 Age | -.048 |  |  |  |  |  |  | -.10 | -.07 |
 Level of education | .035 |  |  |  |  |  |  | .04 | .04 |
 Relationship status | -.095 |  |  |  |  |  |  | -.07 | -.03 |
 Marijuana use | .027 |  |  |  |  |  |  | .00 | .00 |
 Alcohol use | -.059 |  |  |  |  |  |  | -.02 | -.01 |
 Number sex partners | -.047 |  |  |  |  |  |  | .02 | .01 |
Constant |  | 1.79 |  | 0.36 |  | −0.11 |  | 0.04 |  |
Adjusted R Square | Â | .22*** | .42*** | .42 | .41 | ||||