| 变量 | (1) | (2) | (3) | (4) |
| Gtfp | Gtfp | Gtfp | Gtfp | |
| Power | −0.953*** | −0.047** | −0.953** | −0.047** |
| (−2.956) | (−2.548) | (−2.12) | (−2.55) | |
| First | −0.928*** | −0.020 | −0.928* | −0.020 |
| (−2.721) | (−0.761) | (−1.75) | (−0.76) | |
| Age | −0.394 | −0.030 | −0.394 | −0.030 |
| (−1.197) | (−0.985) | (−0.68) | (−0.99) | |
| Pattern | −0.957*** | −0.083*** | −0.957* | −0.083*** |
| (−2.889) | (−2.972) | (−1.80) | (−2.97) | |
| Xjldx | 0.092 | −0.002 | 0.092 | −0.002 |
| (0.382) | (−0.140) | (0.37) | (−0.14) | |
| Asset | −1.299*** | −0.082*** | −1.299*** | −0.082*** |
| (−4.040) | (−3.428) | (−2.71) | (−3.43) | |
| Profit | −0.110 | −0.028* | −0.110 | −0.028* |
| (−0.360) | (−1.772) | (−0.28) | (−1.77) | |
| constant | −7.024*** | 0.212*** | −7.024*** | 0.212*** |
| (−6.821) | (5.027) | (−6.25) | (5.03) | |
| Year | Yes | Yes | Yes | Yes |
| N | 4182 | 4182 | 4182 | 4182 |
| df_m | 12.000 | 12.000 | 12.000 | 12.000 |
| F | 4.512 |
| 3.727 |
|
| R2 |
| 0.05 |
| 0.05 |