变量 | 门槛区间 | 系数 | T值 | P值 |
lnx | x1 ≤−4.1885 | 0.0957 | 2.73 | 0.018 |
lnx | −4.1885 < x1 ≤ −0.3971 | 0.0839 | 2.44 | 0.031 |
lnx | x1 > −0.3971 | 0.0585 | 1.63 | 0.130 |
lnx2 |
| 0.8419 | 13.93 | 0.000 |
x3 |
| 0.1976 | 6.03 | 0.000 |
x4 |
| -0.0196 | -0.60 | 0.561 |
_cons |
| -0.3003 | -0.59 | 0.569 |