| 债务融资成本 | 股权融资成本 | ||||
| 基准回归 | 非线性回归 | 基准回归 | 非线性回归 | ||
EP3 | −0.006* | 0.096* | 0.026*** | 0.076*** | ||
| (−1.86) | (1.69) | (11.63) | (6.18) | ||
EP3sq |
| −0.100* |
| −0.048*** | ||
|
| (−1.86) |
| (−4.13) | ||
N | 3630 | 3630 | 3630 | 3630 | ||
r2 | 0.068 | 0.071 | 0.080 | 0.084 | ||
F | 2.193 | 2.802 | 21.314 | 20.541 | ||