| Model | Unstandardized Coefficients | Standardized Coefficients | t | Sig. | ||
| β | Std. Error | Beta | ||||
| 1 | (Constant) | 2.69 | 0.13 | 20.26 | 0.00 | |
| IR | 0.24 | 0.04 | 0.39 | 6.45 | 0.00 | |
| 2 | (Constant) | 2.05 | 0.21 | 9.68 | 0.00 | |
| IR | 0.25 | 0.04 | 0.41 | 6.92 | 0.00 | |
| POS | 0.16 | 0.04 | 0.23 | 3.81 | 0.00 | |