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Re: st: glm error message after binomial log or identity link models with missing data


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: glm error message after binomial log or identity link models with missing data
Date   Mon, 18 Feb 2008 21:17:27 +0000 (GMT)

--- Jane Schroeder <Jane_Schroeder@unc.edu> wrote:
> When I run binomial -glm- models with a log or identity link function
> I get the following error message whenever there are observations
with 
> missing data for a model covariate, even though all predicted risks
> are well within the permissible (0,1) range:

I think StataCorp forgot a -if e(sample)- in lines 1512 and 1516 of
glm.ado (you can see that when you type -viewsource glm.ado-).

you can perform this test yourself by typing after -glm-:
predict mu, mu
assert mu >= 0 & mu <= 1 if e(sample)

Hope this helps,
Maarten



-----------------------------------------
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

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


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