|
| (1) | (2) | (3) |
| 变量 | ER | ER | ER |
| Db | −0.830*** (0.278) | 5.420*** (1.559) | 8.342*** (1.698) |
| Inter |
|
| −14.533** (5.835) |
| Infra |
|
| −0.174*** (0.039) |
| Retail |
|
| −1.331 (0.829) |
| People |
|
| −0.002*** (0.000) |
| PAD |
|
| −0.019 (0.020) |
| 常数项 | 0.243*** (0.081) |
|
|
| 个体固定 | NO | YES | YES |
| 时间固定 | NO | YES | YES |
| 样本量 | 540 | 540 | 540 |
| R2 | 0.016 | 0.240 | 0.278 |