| scal | 0.346*** | 0.391*** | 0.414*** |
| (0.08) | (0.08) | (0.07) | |
| sc | −1.402*** | −1.407*** | −2.344*** |
| (0.41) | (0.42) | (0.42) | |
| stru | −1.005*** | −0.974*** | −0.862*** |
| (0.10) | (0.11) | (0.10) | |
| finance | −3.302** | −2.803 | −1.463 |
| (1.67) | (1.71) | (1.61) | |
| _cons | 25.716** | 46.755*** | 13.985 |
| (11.38) | (10.59) | (11.42) | |
| Observations | 496 | 496 | 496 |
| R-squared | 0.625 | 0.61 | 0.64 |