| 变量 | (1) | (2) | (3) |
|
|
|
| |
| 截距项 | 0.026*** | 0.026*** | 0.012*** |
| (15.10) | (15.14) | (2.82) | |
|
| 0.650*** | 0.650*** | 0.656*** |
| (50.48) | (50.48) | (51.10) | |
|
| −0.273*** | −0.314*** | −0.314*** |
| (−6.67) | (−6.80) | (−6.83) | |
|
|
| −0.246** | −0.233** |
|
| (−1.92) | (−1.80) | |
|
| −0.179*** | −0.212*** | −0.195*** |
| (−2.52) | (−2.90) | (−2.68) | |
|
| −0.136*** | −0.133*** | −0.137*** |
| (−7.43) | (−7.22) | (−7.46) | |
|
| 0.181** | 0.147* | 0.169* |
| (0.043) | (1.61) | (1.86) | |
| 行业 | 未控制 | 未控制 | 已控制 |
| 年份 | 未控制 | 未控制 | 已控制 |
| N | 4326 | 4326 | 4326 |
| F | 644.98 | 538.43 | 237.93 |
| 调整R2 | 0.4268 | 0.4271 | 0.4341 |