| 变量 | RD |
| Cons | −339.121 |
| DT | 0.190*** |
| DT2 | −0.116** |
| Edu | 0.413*** |
| Tech | 0.389*** |
| Year/Province | control |
| Adjust-R2 | 0.334 |
| N | 5228 |
| F值 | 657.777*** |