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  • Inconsistent results when rerunning drdid command in doubly robust DiD

    Dear Statalist,

    I’m encountering an issue with the drdid command (for doubly robust DID) where repeated runs of the same code produce different results. I would appreciate your help in diagnosing the problem.

    xtset city
    drdid owner age gender, i(city) time(post) tr(didlist)


    Outcome: owner; Controls: age, gender
    Panel: city; Time: post (0/1 for pre/post); Treatment: didlist (1/0 treated/control).

    Repeated runs of my drdid code yield different ATT results. Could you help diagnose why? I attached the dataset below. Thanks!

    clear
    clear
    input year gender age owner city didlist post
    2011 0 46 0 530500 0 0
    2013 1 50 0 530500 0 0
    2011 1 60 0 530500 0 0
    2011 1 48 0 530500 0 0
    2015 1 72 1 530500 0 0
    2011 0 80 0 530500 0 0
    2013 0 58 0 530500 0 0
    2015 1 49 0 530500 0 0
    2011 0 45 0 530500 0 0
    2015 0 53 0 530500 0 0
    2013 1 51 0 530500 0 0
    2015 1 53 0 530500 0 0
    2011 0 47 0 530500 0 0
    2015 0 51 0 530500 0 0
    2011 1 53 0 530500 0 0
    2013 1 55 0 530500 0 0
    2015 1 57 0 530500 0 0
    2018 1 60 0 530500 1 1
    2015 0 61 0 530500 0 0
    2013 1 56 0 530500 0 0
    2015 1 58 0 530500 0 0
    2011 0 51 0 530500 0 0
    2015 0 55 0 530500 0 0
    2015 1 49 1 530500 0 0
    2013 0 66 1 530500 0 0
    2013 1 63 1 530500 0 0
    2015 0 65 1 530500 0 0
    2013 0 57 0 530500 0 0
    2015 1 66 1 530500 0 0
    2018 1 69 0 530500 1 1
    2013 1 72 0 530500 0 0
    2013 0 41 0 530500 0 0
    2015 0 63 1 530500 0 0
    2015 0 79 1 530500 0 0
    2015 0 68 0 530500 0 0
    2015 0 61 0 530500 0 0
    2015 1 62 0 530500 0 0
    2013 1 58 1 530500 0 0
    2013 0 74 1 530500 0 0
    2015 0 76 0 530500 0 0
    2015 1 69 0 530500 0 0
    2013 0 61 0 530500 0 0
    2013 1 52 0 530500 0 0
    2013 1 72 0 530500 0 0
    2013 1 55 0 530500 0 0
    2018 1 60 0 530500 1 1
    2013 0 59 0 530500 0 0
    2015 0 61 0 530500 0 0
    2018 1 67 0 530500 1 1
    2018 0 64 0 530500 1 1
    2013 1 64 0 530500 0 0
    2015 0 62 0 530500 0 0
    2018 0 65 0 530500 1 1
    2011 0 60 0 530500 0 0
    2018 0 67 0 530500 1 1
    2013 1 66 0 530500 0 0
    2015 1 68 0 530500 0 0
    2015 0 68 0 530500 0 0
    2013 0 60 0 530500 0 0
    2015 1 74 0 530500 0 0
    2013 0 74 0 530500 0 0
    2015 0 76 0 530500 0 0
    2013 0 79 0 530500 0 0
    2013 0 64 0 530500 0 0
    2015 0 66 0 530500 0 0
    2013 1 56 1 530500 0 0
    2013 0 86 0 530500 0 0
    2015 0 48 0 530600 0 0
    2013 1 58 0 530600 0 0
    2013 1 71 0 530600 0 0
    2018 1 73 0 530600 0 1
    2011 0 61 0 530600 0 0
    2013 0 63 1 530600 0 0
    2013 1 49 1 530600 0 0
    2015 1 51 0 530600 0 0
    2013 0 47 0 530600 0 0
    2015 0 49 0 530600 0 0
    2018 0 52 0 530600 0 1
    2011 1 51 0 530600 0 0
    2015 0 63 0 530600 0 0
    2018 0 76 0 530600 0 1
    2018 1 74 0 530600 0 1
    2011 1 61 0 530600 0 0
    2015 1 66 0 530600 0 0
    2011 0 59 0 530600 0 0
    2018 0 66 0 530600 0 1
    2013 1 65 0 530600 0 0
    2018 0 48 0 530600 0 1
    2015 0 64 0 530600 0 0
    2013 1 72 0 530600 0 0
    2013 0 48 0 530600 0 0
    2018 1 60 1 530600 0 1
    2013 0 75 1 530600 0 0
    2015 0 58 0 530600 0 0
    2011 0 46 0 530600 0 0
    2013 0 48 1 530600 0 0
    2015 0 44 1 530600 0 0
    2011 0 46 0 530600 0 0
    2015 0 50 0 530600 0 0
    2018 0 53 1 530600 0 1
    2013 0 49 1 530600 0 0
    2015 1 53 0 530600 0 0
    2018 1 56 0 530600 0 1
    2013 0 49 1 530600 0 0
    2015 0 50 0 530600 0 0
    2018 1 57 1 530600 0 1
    2013 1 80 1 530600 0 0
    2013 0 67 0 530600 0 0
    2018 0 44 0 530600 0 1
    2015 0 50 1 530600 0 0
    2015 0 64 0 530600 0 0
    2018 0 55 0 530600 0 1
    2015 1 68 0 530600 0 0
    2015 0 67 0 530600 0 0
    2015 1 60 1 530600 0 0
    2018 1 63 1 530600 0 1
    2018 0 55 1 530600 0 1
    2015 0 74 0 530600 0 0
    2013 0 56 0 530600 0 0
    2018 0 61 0 530600 0 1
    2018 0 55 0 530600 0 1
    2015 0 45 1 530600 0 0
    2013 0 58 0 530600 0 0
    2015 0 60 0 530600 0 0
    2015 0 71 1 530600 0 0
    2013 0 77 0 530600 0 0
    2013 0 47 0 530600 0 0
    2015 0 63 1 530600 0 0
    2015 0 62 0 530600 0 0
    2018 0 65 0 530600 0 1
    2015 0 62 0 530600 0 0
    2013 0 64 1 530600 0 0
    2013 0 44 0 530600 0 0
    2018 0 49 0 530600 0 1
    2015 0 44 0 530600 0 0
    2018 1 59 0 530600 0 1
    2018 0 67 0 530600 0 1
    2018 0 41 0 530600 0 1
    2018 0 62 0 530600 0 1
    2013 0 79 0 530600 0 0
    2018 0 61 1 530600 0 1
    2013 0 50 0 530600 0 0
    2015 0 50 0 530600 0 0
    2018 0 53 0 530600 0 1
    2013 1 48 0 530600 0 0
    2018 1 53 0 530600 0 1
    2018 1 56 0 530600 0 1
    2018 0 54 0 530600 0 1
    2013 0 58 1 530600 0 0
    2018 0 63 0 530600 0 1
    2018 1 63 0 530600 0 1
    2013 1 48 0 530600 0 0
    2015 1 51 0 530600 0 0
    2013 0 50 0 530600 0 0
    2015 0 73 0 530600 0 0
    2013 1 60 0 530600 0 0
    2013 0 55 0 530600 0 0
    2013 0 47 0 530600 0 0
    2018 0 51 0 530600 0 1
    2015 1 47 0 530600 0 0
    2013 1 58 0 530600 0 0
    2015 1 48 0 530600 0 0
    2018 1 47 0 530600 0 1
    2013 0 53 0 530600 0 0
    2015 0 54 0 530600 0 0
    2013 1 75 0 530600 0 0
    2015 1 60 0 530600 0 0
    2013 0 77 0 530600 0 0
    2015 0 80 0 530600 0 0
    2015 1 57 1 530600 0 0
    2015 0 58 0 530600 0 0
    2018 1 55 0 530600 0 1
    2013 0 65 0 530600 0 0
    2013 0 49 0 530600 0 0
    2013 0 63 0 530600 0 0
    2013 0 64 0 530600 0 0
    2018 0 69 0 530600 0 1
    2018 1 61 0 530600 0 1
    2013 0 62 1 530600 0 0
    2015 0 64 0 530600 0 0
    2013 0 48 0 530600 0 0
    2011 0 68 0 530600 0 0
    2013 0 71 0 530600 0 0
    2011 1 72 0 530600 0 0
    2013 1 45 1 530600 0 0
    2018 0 47 0 530600 0 1
    2018 1 49 1 530600 0 1
    2013 0 60 1 530100 0 0
    2013 1 65 0 530100 0 0
    2013 0 67 0 530100 0 0
    2013 0 83 0 530100 0 0
    2018 0 67 0 530100 0 1
    2015 1 77 0 530100 0 0
    2015 1 45 0 530100 0 0
    2015 1 51 0 530100 0 0
    2013 1 52 1 530100 0 0
    2018 1 57 0 530100 0 1
    2013 0 53 1 530100 0 0
    2018 0 58 0 530100 0 1
    2013 0 50 0 530100 0 0
    2018 1 67 0 530100 0 1
    2013 0 62 0 530100 0 0
    2018 0 67 0 530100 0 1
    2015 1 64 0 530100 0 0
    2015 1 80 0 530100 0 0
    2013 0 60 1 530100 0 0
    2015 0 52 1 530100 0 0
    2015 1 58 1 530100 0 0
    2011 1 79 0 530100 0 0
    2013 1 81 0 530100 0 0
    2015 0 76 1 530100 0 0
    2018 0 55 0 530100 0 1
    2013 1 57 1 530100 0 0
    2015 0 71 0 530100 0 0
    2013 0 51 1 530100 0 0
    2015 0 53 0 530100 0 0
    2018 0 56 1 530100 0 1
    2015 1 57 1 530100 0 0
    2015 0 67 1 530100 0 0
    2011 0 69 0 530100 0 0
    2013 0 69 1 530100 0 0
    2013 1 45 0 530100 0 0
    2015 0 48 0 530100 0 0
    2018 0 51 0 530100 0 1
    2018 0 80 0 530100 0 1
    2018 0 50 1 530100 0 1
    2013 0 73 1 530100 0 0
    2013 1 74 1 530100 0 0
    2015 1 62 0 530100 0 0
    2015 0 56 0 530100 0 0
    2015 0 43 1 530100 0 0
    2013 0 48 1 530100 0 0
    2015 0 50 1 530100 0 0
    2018 0 84 0 530100 0 1
    2015 0 50 0 530100 0 0
    2011 0 62 0 530100 0 0
    2011 1 60 0 530100 0 0
    2015 0 81 0 530100 0 0
    2015 0 52 0 530100 0 0
    2013 1 71 0 530100 0 0
    2015 1 73 1 530100 0 0
    2018 1 46 0 530100 0 1
    2013 1 63 0 530100 0 0
    2013 0 68 0 530100 0 0
    2015 0 63 0 530100 0 0
    2013 1 46 1 530100 0 0
    2015 1 48 1 530100 0 0
    2018 1 51 1 530100 0 1
    2015 1 54 1 530100 0 0
    2015 0 61 1 530100 0 0
    2013 1 68 1 530100 0 0
    2015 0 64 0 530100 0 0
    2018 0 67 1 530100 0 1
    2015 1 79 0 530100 0 0
    2015 1 51 0 530100 0 0
    2018 0 47 1 530100 0 1
    2013 1 57 0 530100 0 0
    2011 0 61 0 530100 0 0
    2015 0 65 1 530100 0 0
    2013 0 69 0 530100 0 0
    2015 0 72 1 530100 0 0
    2013 1 68 0 530100 0 0
    2018 0 75 0 530900 0 1
    2011 1 50 0 530900 0 0
    2018 0 66 0 530900 0 1
    2011 0 61 0 530900 0 0
    2011 0 55 0 530900 0 0
    2015 0 64 0 530900 0 0
    2013 0 55 1 530900 0 0
    2018 0 46 0 530900 0 1
    2015 1 63 0 530900 0 0
    2011 0 80 0 530900 0 0
    2018 0 56 0 530900 0 1
    2011 0 56 0 530900 0 0
    2013 1 61 0 530900 0 0
    2013 0 71 0 530900 0 0
    2015 0 73 0 530900 0 0
    2013 0 78 1 530900 0 0
    2015 0 52 0 530900 0 0
    2018 0 73 0 530900 0 1
    2011 0 66 0 530900 0 0
    2013 1 61 0 530900 0 0
    2018 0 64 1 530900 0 1
    2018 0 51 0 530900 0 1
    2013 0 56 1 530700 0 0
    2013 0 59 1 530700 0 0
    2015 0 61 1 530700 0 0
    2013 1 81 1 530700 0 0
    2013 0 81 1 530700 0 0
    2013 0 51 1 530700 0 0
    2015 1 51 1 530700 0 0
    2011 1 60 0 530700 0 0
    2011 0 57 0 530700 0 0
    2015 0 61 1 530700 0 0
    2015 1 79 1 530700 0 0
    2011 0 74 0 530700 0 0
    2011 1 71 0 530700 0 0
    2013 1 73 1 530700 0 0
    2015 1 75 1 530700 0 0
    2015 0 74 0 530700 0 0
    2018 0 77 0 530700 0 1
    2013 1 72 0 530700 0 0
    2011 0 79 0 530700 0 0
    2013 0 81 1 530700 0 0
    2013 0 56 1 530700 0 0
    2011 0 51 0 530700 0 0
    2013 0 53 1 530700 0 0
    2015 0 54 1 530700 0 0
    2015 1 57 0 530700 0 0
    2018 1 60 0 530700 0 1
    2013 1 57 1 530700 0 0
    2013 0 62 1 530700 0 0
    2013 0 51 1 530700 0 0
    2015 0 46 0 530700 0 0
    2018 0 56 0 530700 0 1
    2011 1 49 0 530700 0 0
    2013 1 51 1 530700 0 0
    2015 1 53 0 530700 0 0
    2011 0 46 1 530700 0 0
    2015 0 50 1 530700 0 0
    2015 0 62 0 530700 0 0
    2013 0 56 1 530700 0 0
    2011 1 56 0 530700 0 0
    2013 1 58 0 530700 0 0
    2015 1 60 1 530700 0 0
    2013 0 59 1 530700 0 0
    2018 1 67 1 530700 0 1
    2013 1 59 0 530700 0 0
    2018 1 64 1 530700 0 1
    2015 0 58 1 530700 0 0
    2013 0 74 1 530700 0 0
    2015 0 76 0 530700 0 0
    2013 0 56 1 530700 0 0
    2013 1 59 1 530700 0 0
    2011 0 46 0 530700 0 0
    2013 0 57 0 530700 0 0
    2018 0 59 0 530700 0 1
    2015 1 62 1 530700 0 0
    2015 0 43 1 530700 0 0
    2015 0 53 1 530700 0 0
    2015 1 53 1 530700 0 0
    2015 0 62 1 530700 0 0
    2015 0 56 1 530700 0 0
    2018 0 59 1 530700 0 1
    2018 0 76 0 530700 0 1
    2018 0 91 1 530700 0 1
    2013 0 59 1 530700 0 0
    2015 0 61 1 530700 0 0
    2013 1 62 1 530700 0 0
    2015 1 65 1 530700 0 0
    2013 0 66 1 530700 0 0
    2015 0 68 1 530700 0 0
    2013 1 75 1 530700 0 0
    2015 1 77 1 530700 0 0
    2013 1 71 0 530700 0 0
    2015 1 73 1 530700 0 0
    2013 0 57 0 530700 0 0
    2013 1 57 0 530700 0 0
    2013 0 48 1 530700 0 0
    2011 0 47 0 530700 0 0
    2015 0 49 1 530700 0 0
    2013 0 46 1 530700 0 0
    2015 0 48 1 530700 0 0
    2015 1 48 0 530700 0 0
    2015 1 44 1 530700 0 0
    2013 1 59 1 350600 0 0
    2013 0 52 0 350600 0 0
    2015 0 54 0 350600 1 0
    2018 1 56 1 350600 1 1
    2018 0 80 1 350600 1 1
    2013 0 54 0 350600 0 0
    2018 0 49 1 350600 1 1
    2011 0 57 0 350600 0 0
    2013 0 49 1 350600 0 0
    2011 1 61 0 350600 0 0
    2018 1 52 1 350600 1 1
    2013 0 44 1 350600 0 0
    2018 0 51 0 350600 1 1
    2013 0 53 1 350600 0 0
    2018 0 66 1 350600 1 1
    2018 0 67 1 350600 1 1
    2013 1 54 1 350600 0 0
    2015 0 63 0 350600 1 0
    2013 1 76 1 350600 0 0
    2013 0 75 1 350600 0 0
    2015 0 60 1 350600 1 0
    2018 0 64 1 350600 1 1
    2013 0 48 0 350600 0 0
    2018 0 53 0 350600 1 1
    2015 1 50 0 350600 1 0
    2018 1 53 0 350600 1 1
    2018 0 57 1 350600 1 1
    2015 1 59 0 350600 1 0
    2013 0 54 1 350600 0 0
    2018 0 59 1 350600 1 1
    2013 0 62 1 350600 0 0
    2015 0 64 1 350600 1 0
    2018 0 67 1 350600 1 1
    2013 0 85 1 350600 0 0
    2015 0 58 1 350600 1 0
    2018 0 52 0 350600 1 1
    2015 1 66 1 350600 1 0
    2018 0 62 1 350600 1 1
    2013 0 73 0 350600 0 0
    2013 0 47 1 350600 0 0
    2018 0 52 1 350600 1 1
    2015 0 50 1 350300 1 0
    2015 0 58 1 350300 1 0
    2013 1 63 1 350300 0 0
    2015 1 60 1 350300 1 0
    2015 0 49 1 350300 1 0
    2011 1 49 0 350300 0 0
    2015 1 53 1 350300 1 0
    2015 0 84 1 350300 1 0
    2015 0 60 1 350300 1 0
    2018 1 74 1 350300 1 1
    2015 1 63 0 350300 1 0
    2013 1 72 1 350300 0 0
    2013 1 63 1 350300 0 0
    2015 1 65 1 350300 1 0
    2013 1 64 1 350300 0 0
    2013 0 62 1 350300 0 0
    2015 0 64 1 350300 1 0
    2013 0 56 1 350300 0 0
    2018 0 66 1 350300 1 1
    2013 1 56 1 350300 0 0
    2015 1 58 1 350300 1 0
    2015 0 76 1 350300 1 0
    2013 0 56 1 350300 0 0
    2013 1 57 1 350300 0 0
    2015 0 47 1 350300 1 0
    2015 0 49 1 350300 1 0
    2015 0 54 1 350300 1 0
    2013 0 60 1 350300 0 0
    2015 1 57 1 350300 1 0
    2013 0 52 0 350300 0 0
    2013 0 74 1 350300 0 0
    2015 0 54 1 350300 1 0
    2015 1 69 1 350300 1 0
    2013 0 55 0 350300 0 0
    2015 0 57 0 350300 1 0
    2013 1 58 1 350300 0 0
    2015 1 53 1 350300 1 0
    2013 0 51 0 350300 0 0
    2013 1 71 1 350300 0 0
    2015 0 67 1 350300 1 0
    2015 0 50 1 350300 1 0
    2015 1 61 1 350300 1 0
    2013 1 58 1 350300 0 0
    2015 1 53 0 350300 1 0
    2015 1 59 1 350300 1 0
    end

    Best wishes,
    Simon
    Last edited by Simon Holden; 04 Feb 2025, 13:42.

  • #2
    Drdid requires only two periods of data
    in you data example you have three
    that causes the problem

    Comment


    • #3
      Originally posted by FernandoRios View Post
      Drdid requires only two periods of data
      in you data example you have three
      that causes the problem
      Thank your! Fernando! Turns out the problem was with how I set up my data—I totally misunderstood the pre-treatment periods! I mistakenly thought I could combine multiple pre-treatment periods, but your answer cleared things up. Really appreciate your help! 😊

      Comment

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