| 变量 | (1) | (2) |
| RI | RI | |
| 截距项 | 0.098* | 0.099** |
| (1.90) | (1.92) | |
| top5 |
| 0.030*** |
|
| (2.53) | |
| size | 0.023*** | 0.022*** |
| (4.20) | (4.08) | |
| lev | 0.073*** | 0.073*** |
| (7.50) | (7.46) | |
| roa | −0.089*** | −0.088*** |
| (−6.44) | (−6.41) | |
| lar | 0.024* | 0.017* |
| (1.65) | (1.10) | |
| N | 4326 | 4326 |
| F | 41.71 | 34.69 |
| 调整R2 | 0.037 | 0.038 |