| Variables | Coefficient and significance level | |
| DE1 | 0.165** | 0.137* |
| (0.082) | (0.081) | |
| DE2 | 0.017 | 0.022 |
| (0.088) | (0.088) | |
| DE3 | 0.246** | 0.254** |
| (0.126) | (0.127) | |
| DE4 | 0.354** | 0.348** |
| (0.153) | (0.154) | |
| DE5 | −0.032 | −0.036 |
| (0.114) | (0.119) | |
| ID | No | Yes |
| RG | No | Yes |
| R-squared | 0.855 | 0.858 |
| Adj R-squared | 0.853 | 0.854 |