| 变量 | (1) | (2) | (3) |
| 全样本(fe) | 非疫情分样本(fe) | 疫情分样本(noc) | |
| FSIS | 0.2343*** | 0.2125*** | 0.2163** |
| (3.08) | (3.66) | (2.26) | |
| FSI | 0.2813** | 0.3110** | −0.9883 |
| (2.4) | (2.40) | (−0.65) | |
| LNSIZE | −2.8979* | −2.4770 | 0.3036*** |
| (−1.83) | (−1.14) | (3.71) | |
| TOP1 | −0.1523 | −0.2573** | −0.1791 |
| (−1.66) | (−2.06) | (−0.86) | |
| NID | 0.8280 | 1.3243** | 0.9633 |
| (1.35) | (2.19) | (1.05) | |
| RGDP | 0.3837*** | 0.9279 | - |
| (2.85) | (1.49) | - | |
| RM2 | 0.3280** | 0.2636** | - |
| (2.64) | (2.16) | - | |
| _cons | 88.6193* | 75.3583 | - |
| (1.95) | (1.16) | - | |
| F检验 | 29.84 | 25.32 | 230.71 |
| R2 | 0.6352 | 0.6351 | 0.9714 |