| Unstandardised coefficient | standardised coefficient | t | Sig. | Co-linear statistics | |
B | Std.Error | Beta | VIF | |||
(Constant) | 26.687 | 3.253 | - | 8.207 | <0.001 | - |
difference in AL | −36.861 | 15.213 | −0.284 | −2.423 | 0.018 | 1.142 |
difference in SE | −29.142 | 9.880 | −0.345 | −2.949 | 0.005 | 1.142 |