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Re: st: RE: compare models


From   "Serena Trucchi" <serena.trucchi@unito.it>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: compare models
Date   Fri, 11 Apr 2008 19:08:01 +0200 (CEST)

What I want to estimte is the the age-wealth path. in order to do that I 
choose spline function for age but I don't know how many knots it should
have. in order to choose the number of knots I want to test a full age
dummy model against an spline one. can you help me?
thanks


> Testing for non-nested models is very hard. You might want to look into
> AIC or BIC (see -help est stats-). Can you tell us more about your
> models because now we cannot do anything more than this type of general
> comments.
>
> -- Maarten
>
> --- Serena Trucchi <serena.trucchi@unito.it> wrote:
>
>> thanks Martin, but my models are non-nested..
>>
>> > -nestreg- may be for you...
>> >
>> > Martin Weiss
>> > _________________________________________________________________
>> >
>> > Diplom-Kaufmann Martin Weiss
>> > Mohlstrasse 36
>> > Room 415
>> > 72074 Tuebingen
>> > Germany
>> >
>> > Fon: 0049-7071-2978184
>> >
>> > Home: http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1130
>> >
>> > Publications:
>> http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1131
>> >
>> > SSRN:
>> http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=669945
>> >
>> >
>> > -----Original Message-----
>> > From: owner-statalist@hsphsun2.harvard.edu
>> > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Serena
>> Trucchi
>> > Sent: Friday, April 11, 2008 4:49 PM
>> > To: statalist@hsphsun2.harvard.edu
>> > Subject: st: compare models
>> >
>> > I would like to know how to compare different specifications of a
>> model. I
>> > would test whether two different specifications are statistically
>> > different.
>> > thanks
>> >
>> >
>> >
>> >
>> > *
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>> >
>>
>>
>> *
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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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