| 变量名称 | 系数值 | 标准误 | t值 | p值 |
| lnEP | 0.033*** | 0.019 | 3.58 | 0.000 |
| lnK | −0.058*** | 0.021 | -2.83 | 0.005 |
| lnFis | 0.54*** | 0.043 | 12.91 | 0.000 |
| lnC | 0.225*** | 0.032 | 7.10 | 0.000 |
| lnIE | 0.034** | 0.016 | 2.06 | 0.041 |
| lnL | 0.062 | 0.049 | 1.26 | 0.210 |
| 常数项 | 3.927*** | 0.231 | 17.03 | 0.000 |
| 模型参数 | R-squared = 0.921;F = 349.19***;P = 0.000 | |||