Difference-in-Difference

[Jihane bou zakhem]

Good morning,

Kindly I am new in this command. What does it mean that I don't have significance in DID estimator , yet before and after we have. Should I choose the control sample differently.



Thanks in advance,

Jihane

[Hemanshu Kumar]

This is simply telling you that while in both the pre- and post-periods, there was a statistically significant difference between the treatment and control groups, we cannot reject the null hypothesis that there is no difference between the two differences, and so there is unlikely to be any "treatment effect".

Whether this is because of a poorly chosen control group or for any other reason, you will need to figure out. You have not provided any information that can help diagnose this.

[Maxence Morlet]

We do not even know what equation you have used to generate these results...