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RE: st: RE: PSMATCH2 and panel data


From   "Lachenbruch, Peter" <Peter.Lachenbruch@oregonstate.edu>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: PSMATCH2 and panel data
Date   Mon, 1 Feb 2010 09:24:13 -0800

You can also use xtile to get a new variable with quantile categories - quintiles are common.  In one study I worked on the quintiles showed that the drugs administered didn't have much effect.  Not only that, there was an effect only at the extremes of risk (either first of fifth quintile).  I was surprised.

Tony

Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Austin Nichols
Sent: Monday, February 01, 2010 9:18 AM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: PSMATCH2 and panel data

See also
http://www.stata.com/statalist/archive/2009-12/msg00344.html

On Mon, Feb 1, 2010 at 5:45 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote:
> I don't know, but it might be better to rephrase your question in terms
> of what you seek: Propensity scores that vary within panels as well as
> between? Is there any literature that does that?
>
> (Not my field at all, but I think this is a repeat of an unanswered
> question.)
>
> Nick
> n.j.cox@durham.ac.uk
>
> melia bruffman
>
> Does anyone knows if PSMATCH2 can be used with with panel data?  thanks!

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