本人刚刚开始学习DID,请问下面的结果是说明政策对gini没有影响,还是我的did的命令有问题啊,多谢大家
DIFFERENCE-IN-DIFFERENCES ESTIMATION RESULTS
Number of observations in the DIFF-IN-DIFF: 2575
Before After
Control: 920 1036 1956
Treated: 0 619 619
920 1655
--------------------------------------------------------
Outcome var. | gdpper | S. Err. | |t| | P>|t|
----------------+---------+---------+---------+---------
Before | | | |
Control | -9.9e+06| | |
Treated | -9.9e+06| | |
Diff (T-C) | 7914.332| 895.657 | 8.84 | 0.000***
After | | | |
Control | -9.1e+04| | |
Treated | -8.3e+04| | |
Diff (T-C) | 7914.332| 895.657 | 8.84 | 0.000***
| | | |
Diff-in-Diff | 0.000 | . | . | .
--------------------------------------------------------
R-square: 0.56
* Means and Standard Errors are estimated by linear regression
**Inference: *** p<0.01; ** p<0.05; * p<0.1