|
| (1) | (2) | (3) | |
|
| ind | manu | 面板2SLS | |
|
| firststep | IV | ||
| im | 0.6389*** | 0.1635*** |
| 0.7522** |
|
| (0.1645) | (0.0595) |
| (0.2741) |
| ad |
|
| −0.0001*** |
|
|
|
|
| (0.0003) |
|
| 控制变量 | yes | yes | yes | yes |
| 时间 | no | yes | yes | yes |
| 地区 | no | yes | yes | yes |
| 样本数 | 160 | 160 | 160 | 160 |
| R2 | 0.9145 | 0.9341 |
|
|
| Anderson canon. corr. LM statistic |
|
|
| 23.41*** |
| Cragg-Donald Wald F statistic |
|
|
| 18.36*** |
| Anderson-Rubin Wald test |
|
|
| 13.68*** |