|
| 控股股东 | 其他股东 | ||||
|
| Patentt | Patentt | Patentt | Patentt | ||
| Pledge_d | −0.072*** |
| −0.069** |
| ||
|
| (−2.51) |
| (−2.20) |
| ||
| Pledge_r |
| −0.090*** |
| −0.023* | ||
|
|
| (−6.38) |
| (−1.66) | ||
| 控制变量 | 控制 | 控制 | 控制 | 控制 | ||
| Constant | 1.366*** | 1.768*** | 1.494*** | 1.764*** | ||
|
| (11.41) | (14.38) | (10.24) | (10.48) | ||
| Adj.R2 | 0.169 | 0.155 | 0.149 | 0.153 | ||
| F值 | 96.72*** | 81.23*** | 73.71*** | 68.05*** | ||