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Re: st: how to get dfbetas in StataIntercooler with more than 800 observations?


From   Enzo Coviello <enzo.coviello@alice.it>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to get dfbetas in StataIntercooler with more than 800 observations?
Date   Sun, 06 Apr 2008 09:39:49 +0200

Dear Jose Maria,

In the previous mail I erroneously mentioned -stpm-.

Sorry the command computing deltabetas is -stdb- (written by prof Thomas Lumley)

I apologize for confusion


Enzo




At 03.33 06/04/2008, you wrote:

Dear statalisters:
I ran stcox with 1473 observations, each with two variables (sexo, admaecentro), plus the time of failure (tempoemdias) and the indicator of censoring (status).
To analyse for the leverage (influence) possibility, I followed page 174 of the version 10 manual, and I commanded and got :
stcox sexo idmaecentro, esr(esr*)
set matsize 800
mkmat esr1 esr2, matrix(esr)
matsize too small to create a [1473,2] matrix
r(908);
The error was expected, since my Stata is Intercooled, limited to matrix 800,x.
Is there a way to get the dfbetas, not through matrix?
My Stata is version 10, Intercooled, for Windows, XP Professional, with 500 RAM .
Thank you for any help.
JosÚ Maria


Jose Maria Pacheco de Souza, Professor Titular (aposentado)
Departamento de Epidemiologia/Faculdade de Saude Publica, USP
Av. Dr. Arnaldo, 715
01246-904 - S. Paulo/SP - Brasil
fones (11)3082-3886; (11)3083-4246; (11)3061-7747; (11)3768-8612; (11)3714-2403
fax (11)3082-2920; (11)3714-2403
www.fsp.usp.br/~jmpsouza


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Enzo Coviello
UnitÓ di Epidemiologia e Statistica ASL BARI
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