Hi

I have never used this technique and have been reading about it but I am still confused. Please could you provide a step by step guide on how to execute.

My treatment indicator t, =1 if received training and =0 if not received training. The sample size is 60 and 522 respectively.

How do I get a one to one match - so match the 60 (in the treated group) with 60 in the control group. Then create a new sample containing the 120 individual observations and then run a regression.

Also, I have seen people talk about x1 x2 etc. being the covariates, are these just all the other z variables in your original regression?

Thanks, Sarah