Test for the significance of two regression coefficients

[Derperino]

Hey everyone. I am currently doing some regressions for subsamples of my original sample where an indicator equals 1 for the first regression and 0 for the second regression. What test do I have to use, to test for the significance of the two resulting coefficients?

 

[hlsmith]

It is not clear what you are doing. You are running one regression model, what type (linear, logistic, etc.), and you have a binary or categorical term in the model? Provide more detail, please.

 

[Derperino]

I´m running a linear regression model. The variable I want to use to build the subsample is binary (either 0 or 1).

Edit: I think it´s easier to show what I mean with two screenshots. I want to test whether the difference in the two estimates of POST =1 is statistically significant.