| 变量 | (1) | (2) | (3) | (4) |
|
|
| 缩短期间 | 面板交互 | |
| KV | KV | KV | KV | |
| IL | −0.173*** | −0.151*** | −0.172*** | −0.157*** |
|
| (−8.33) | (−7.34) | (−7.48) | (−7.61) |
| lnsize |
| −0.017 | 0.035 | −0.039 |
|
|
| (−0.58) | (0.86) | (−1.28) |
| lev |
| −0.173* | −0.268** | −0.159 |
|
|
| (−1.66) | (−2.19) | (−1.54) |
| Top1 |
| 1.101*** | 1.280*** | 1.009*** |
|
|
| (5.35) | (4.49) | (4.86) |