| 变量 | RDS |
| GOVSUM | 158.9611*** |
| (7.327) | |
| Age | −0.0840*** |
| (−4.961) | |
| Size | −0.2410** |
| (−2.195) | |
| Lea | −2.0010** |
| (−2.315) | |
| Constant | 10.4937*** |
| (4.461) | |
| Observations | 356 |
| Adjusted R-squared | 0.307 |
| F | 40.25 |