变量 | GTI | GTI | GTI | GTI |
(1) | (2) | (3) | (4) | |
treat×post | -0.213*** (0.0391) | -0.216*** (0.0386) | -1.079** (0.477) | -1.039** (0.272) |
Sub×treat |
|
| -0.0143*** (0.00405) | -0.0150*** (0.00405) |
Sub×treat×post |
|
| 0.0677** (0.0297) | 0.0653** (0.0260) |
Sub×post |
|
| -0.0745** (0.0330) | -0.0686** (0.0280) |
Sub |
|
| 0.116*** (0.0130) | 0.0696*** (0.0119) |
Growth |
| -0.00463 (0.0317) |
| -0.00579 (0.0319) |
Lev |
| 0.0769 (0.0713) |
| 0.0980 (0.0718) |
Ros |
| -0.354*** (0.0852) |
| -0.325*** (0.0842) |
size |
| 0.160*** (0.0155) |
| 0.122*** (0.0169) |
age |
| -0.118*** (0.0173) |
| -0.111*** (0.0170) |
TobinQ |
| 0.0337*** (0.0110) |
| 0.0316*** (0.0110) |
企业 | 控制 | 控制 | 控制 | 控制 |
年度 | 控制 | 控制 | 控制 | 控制 |
样本量 | 4400 | 4400 | 4400 | 4400 |
调整R2 | 0.012 | 0.070 | 0.053 | 0.081 |