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Re: [Fwd: st: RE: compare models]


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: [Fwd: st: RE: compare models]
Date   Mon, 14 Apr 2008 16:09:27 +0100 (BST)

It means that lwbill could not be found in your model, maybe it is not
part of the first equation, or maybe you forgot it.

hope this helps,
Maarten

--- mmolina@uniroma3.it wrote:

> I have to make a regression within a data panel and I received
> this errors: once as the variabile have not been created and the
> other
> time as the variable already exists.
> Could you please help me? What that these errors mean?
> Thanks a lot
> Alejandra
> 
>  gen lwbill=log(1+wbill)
> lwbill already defined
> r(110);
> 
> . gen ltfp1_ols = lrva - _b[lrk]*lrk - _b[lwbill]*lwbill- _b[lrm]*lrm
> if
> e(sample
> > )
> [lwbill] not found
> r(111);
> 
> 
> 
> 
> 
> 
> 
> *
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> 


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