| 变量 | 稳健性检验1 | 稳健性检验2 |
| lnYit | 0.016*** | 0.016*** |
|
| (11.62) | (10.59) |
| L.lnTt | −10.606** |
|
|
| (−2.35) |
|
| lnTt |
| −25.883* |
|
|
| (−1.91) |
| lnYct | 0.002*** | 0.006*** |
|
| (4.02) | (3.44) |
| lnDi | −0.017*** | −0.016** |
|
| (−4.44) | (−2.54) |
| FTAi | 105.020 | 117.219 |
|
| (0.51) | (0.74) |
| Contigi | 77.520 | 58.473 |
|
| (0.63) | (0.39) |
| lnExt | −25.289*** | −27.019 |
|
| (−4.41) | (0.96) |
| lnPct | −35.772 | −464.392** |
|
| (−0.61) | (−2.30) |
| Observations | 319 | 319 |
| Number of groups | 29 | 29 |