Table 7.
Final hierarchical multiple regression model for the prediction of behaviour
| Variable entered | Models | ||
| 1 | 2 | 3 | |
| Intention | .51*** | .37*** | .49*** |
| Past behaviour | .44*** | .43*** | .44*** |
| PBC | .10 | .08 | .09 |
| Age | .12 | ||
| Intention × Age | .11 | ||
| Annual income | -.11 | -.06 | |
| PBC × annual income | .20** | .24*** | |
| R2 | .44 | .47 | .46 |
| Model F | 77.57*** | 37.23*** | 50.78*** |
| ΔR2 | - | .03 | .02 |
| ΔF | - | 4.69*** | 7.05*** |
Note. PBC: Perceived Behavioural Control. Variables are standardized (Z-scores) and beta coefficients are non-standardized.
N = 299 for models including annual income due to missing data. For all others, N = 300.
* p < 0.05. ** p < 0.01. *** p < 0.001.