变量 | 城市 | 农村 |
open | −0.165*** | −0.148*** |
| (0.0252) | (0.0252) |
Constant | 0.357*** | 0.283*** |
| (0.00820) | (0.00821) |
R-squared | 0.104 | 0.085 |
Observations | 403 | 403 |