变量 | GTI | GTI | GTI | GTI |
(1) | (2) | (3) | (4) | |
treat × post | -0.204*** (0.0436) | -0.192*** (0.0464) | -0.723* (0.427) | -0.516** (0.440) |
Sub × treat |
|
| -0.0179*** (0.00519) | -0.0185*** (0.00557) |
Sub × treat × post |
|
| 0.0490* (0.0273) | 0.0391 (0.0283) |
Sub × post |
|
| -0.0367 (0.0308) | -0.0331 (0.0331) |
Sub |
|
| 0.0863*** (0.0192) | 0.0909*** (0.0218) |
Growth |
| 0.123** (0.0542) |
| 0.123** (0.0546) |
Lev |
| 0.0349 (0.0897) |
| 0.0284 (0.0906) |
Ros |
| -0.218* (0.119) |
| -0.238** (0.118) |
size |
| 0.0645*** (0.0174) |
| 0.00686 (0.0195) |
age |
| -0.0959*** (0.0196) |
| -0.0865*** (0.0196) |
TobinQ |
| 0.0574*** (0.0172) |
| 0.0536*** (0.0171) |
企业 | 控制 | 控制 | 控制 | 控制 |
年度 | 控制 | 控制 | 控制 | 控制 |
样本量 | 2770 | 2770 | 2770 | 2770 |
调整R2 | 0.013 | 0.031 | 0.046 | 0.055 |