|
| (1) |
| 变量 | y |
| DID | 0.385** |
|
| (2.20) |
| 年份 | −0.564** |
|
| (−1.98) |
| 实施 | −0.097 |
|
| (−0.60) |
| ta | −0.481*** |
|
| (−6.75) |
| TAGR | −0.198*** |
|
| (−3.02) |
| RTR | 0.000* |
|
| (1.68) |
| RTAR | 0.286 |
|
| (0.57) |
| 2017.YEAR | −0.732*** |
|
| (−3.38) |
| 2018.YEAR | −0.713*** |
|
| (−9.20) |
| 2019.YEAR | −0.473*** |
|
| (−6.10) |
| 2020.YEAR | −0.174** |
|
| (−2.18) |
| Constant | 13.492*** |
|
| (7.43) |
| Observations | 5220 |
| R-squared | 0.080 |
| Company FE | YES |
| Year FE | YES |
| F test | 0 |
| r2_a | 0.0779 |
| F | 23.39 |