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Re: st: Is it normal for some propensity scores to be missing?
From
Lukas Borkowski <[email protected]>
To
[email protected]
Subject
Re: st: Is it normal for some propensity scores to be missing?
Date
Tue, 13 Aug 2013 10:15:09 +0200
Keat,
have you made sure that none of the values of your x variables or your event variable are missing?
You can try -egen miss=rowmiss(event x1 x2 x3 x4 x5)- to crosscheck that!
Best
#
Lukas Borkowski
University of London, School of Oriental and African Studies (SOAS)
M: [email protected]
On 13.08.2013, at 09:52, Ricky Lim <[email protected]> wrote:
> Hi everyone!
>
> I am new to propensity score matching.
> I ran it on STATA with the command
> "pscore event x1 x2 x3 x4 x5, pscore(myscore) blockid(myblock) comsup"
> with a set of hospital data - to get the pscore for hospital "event".
>
> However, I realise STATA did not produce pscore for some of the hospitals,
> and seems like all of them also do not have block ID with common support = 0.
>
> And if I run it without common support, their block ID will appear as 0.
>
> I wonder why is this the case.
> Does this mean that I will not be able use those without propensity
> score as my counter factual?
>
> Hope some of you will be able to give some advices.
> Thank you very much in advanced!
>
>
> Regards,
> Keat
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