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  • Difference -in- difference result in STATA

    For the following output of difference in difference isn't the R-square and adjusted R square values too low. is this a good model?
    Click image for larger version

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  • #2
    Anuradha:
    usually, a DID regression has two groups (say, 1) treated and 2) untreated) and two time-period (say, 1) before and 2) after something).
    See:
    1) https://www.princeton.edu/~otorres/DID101.pdf
    and, obviously:
    2) https://www.stata.com/new-in-stata/d...rences-DID-DDD.
    Kind regards,
    Carlo
    (Stata 19.0)

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    • #3
      Before I comment on the model, please tell me how many units are treated and untreated.

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      • #4
        Hello Jared Greathouse . Treated units= 1468. untreated units = 1494

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        • #5
          Thank you Carlo Lazzaro . I will see if the code should be different and check the useful links too. I did take post period as post 2008 and control and treated groups.

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