| 变量/行业 | (1) | (2) | (3) |
| 高端制造业 | 生物医药 | 新材料 | |
| Q1 | −0.022* | 0.000 | 0.002** |
|
| (−1.58) | (0.02) | (0.37) |
| lngov | −0.004** | −0.017** | −0.018** |
|
| (−0.62) | (−0.79) | (−1.71) |
| RD | 0.010* | 0.004** | −0.009** |
|
| (1.00) | (0.20) | (−0.49) |
| size | 0.002** | 0.010*** | 0.024*** |
|
| (0.16) | (0.27) | (1.39) |
| cash1 | 0.000 | −0.007*** | 0.007 |
|
| (0.03) | (−0.40) | (0.80) |
| lev | 0.034 | 0.004 | 0.071*** |
|
| (0.92) | (0.02) | (1.45) |
| _cons | −0.078** | −0.025 | −0.125** |
|
| (−0.73) | (−0.06) | (−0.89) |
| N | 111.000 | 18.000 | 41.000 |
| r2 | 0.051 | 0.097 | 0.253 |