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Re: st: Is it normal for some propensity scores to be missing?
From
Ricky Lim <[email protected]>
To
[email protected]
Subject
Re: st: Is it normal for some propensity scores to be missing?
Date
Tue, 13 Aug 2013 09:34:08 +0100
Thanks Lukas!
Yes I have made sure none of them were missing before I ran them on stata.
I also tried the command just in case, and they were all 0 in values.
Do you mean that the pscore column is usually all filled up?
Thanks!
Regards,
Keat
On 13 August 2013 09:15, Lukas Borkowski <[email protected]> wrote:
>
> 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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