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Re: st: pre-set the ancillary paramaters in a parametric survival model


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: pre-set the ancillary paramaters in a parametric survival model
Date   Sun, 17 Apr 2011 10:45:02 +0100 (BST)

--- On Fri, 15/4/11, Albert Navarro wrote:
> somebody knows if it is possible to previously set the
> ancillary paramaters in a parametric survival model? I would
> like to study the performance of a given theoretical model
> (eg, weibull with p=0.5) in a serial of samples by
> calculating residuals as a result of comparing the
> theoretical model with the observed data.

You can define a constraint using -constraint- and estimate
your model with that constraint. I wrote a Stata tip on 
that which will appear in the next issue of the Stata 
Journal. You can see a pre-publication draft here:
<http://www.maartenbuis.nl/publications/sigma_rho.html>

Hope this helps,
Maarten

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

http://www.maartenbuis.nl
--------------------------

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