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st: Comparison in survival analysis

From   Aysegul Aydin <Aysegul.Aydin@Colorado.EDU>
To   <>
Subject   st: Comparison in survival analysis
Date   Sun, 26 Aug 2007 20:23:54 -0600

Excellent. Thanks a lot Maarten; I will check it out.


Aysegul Aydin
Assistant Professor 
University of Colorado
Department of Political Science

-----Original Message-----
[] On Behalf Of Maarten buis
Sent: Sunday, August 26, 2007 11:23 AM
Subject: Re: st: RE: Comparison in survival analysis

This is probably not the answer you are looking for, but here goes:
Once you have the likelihood you can easily program it yourself using
-ml-. You will want to have a copy of "Maximum Likelihood Estimation
with Stata" . This book
actually discusses programming a weibull, so that will probably provide
a convenient starting point for your program.

Hope this helps,

--- Aysegul Aydin <Aysegul.Aydin@Colorado.EDU> wrote:
> I was asking POLMETH a few weeks ago about a user-written or canned
> Stata method to estimate generalized weibull though without much 
> luck. Christopher Zorn also adopted the same method in his 2000
> Political Analysis article "Modeling Duration Dependence". This is a
> method I believe that allows the user to model the shape parameter
> with covariates. However, Zorn was using LIMDEP, so I am not sure
> whether this is doable in Stata. But if any of our colleagues have an
> idea about how to do this, I will also greatly appreciate their
> feedback. 

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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