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RE: st: Multilevel modelling of survival data


From   "Justin B Echouffo Tcheugui" <[email protected]>
To   <[email protected]>
Subject   RE: st: Multilevel modelling of survival data
Date   Mon, 16 Mar 2009 09:49:35 -0000

Thanks for this Marteen 
Justin 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Maarten buis
Sent: 16 March 2009 09:39
To: [email protected]
Subject: Re: st: Multilevel modelling of survival data


--- On Mon, 16/3/09, Justin B Echouffo Tcheugui wrote:
> I am trying to assess the effect of a preventive
> intervention on mortality data in a cluster randomised
> trial. The randomisation units were clinics in which my
> patients are nested.  I am trying to assess the efcct
> of the intervention on mortality. 

-stcox- has already some multilevel models built-in in 
the form of the -shared()- option. To estimate such a 
model you can type:

xi: stcox  i.randomgroup, shared(clinic)

There is a good discussion of this option in:
Mario Cleves, William Gould, Roberto Gutierrez, and 
Yulia Marchenko (2008) "An Introduction to Survival 
Analysis using Stata". College Station: Stata Press. 
http://www.stata-press.com/books/saus.html

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      

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