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Fwd: st: No model significance test result for the 2nd model equation in MLE?


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   stata list <statalist@hsphsun2.harvard.edu>
Subject   Fwd: st: No model significance test result for the 2nd model equation in MLE?
Date   Mon, 21 Sep 2009 08:09:16 +0000 (GMT)

I am not in a position to answer, maybe somebody else on the list can answer this one.

-- Maarten

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

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


--- On Thu, 17/9/09, Tao Xiao <taoxiao1@gmail.com> wrote:

> From: Tao Xiao <taoxiao1@gmail.com>
> Subject: Fwd: st: No model significance test result for the 2nd model equation  in MLE?
> To: maartenbuis@yahoo.co.uk
> Date: Thursday, 17 September, 2009, 7:27 PM
> Hi Maarten,
> 
> I don't know why my reply to your message was not
> posted on the list (I am a newbie to this STATALIST, I
> replied to STATALIST but it doesn't work), so I forward
> my previous email (please see below) directly to your email
> box now and please don't mind. And thanks again!
> 
> 
> Tao
> 
> ---------- Forwarded message
> ----------
> From: Tao Xiao <taoxiao1@gmail.com>
> 
> Date: Thu, Sep 17, 2009 at 1:13 PM
> Subject: Re: st: No model significance test result for the
> 2nd model equation in MLE?
> To: statalist@hsphsun2.harvard.edu
> 
> 
> 
> Maarten, thank you very much for your help! Now I can use
> waldtest(2) to get the result of the test whether the
> 
> effects of all covariates in the first two equations are
> simultaneously equal to zero.
> 
> I still don't quite understand your point of
> "perform the tests -quietly-". Is that, for
> example, I have two equations in "ml model", I run
> the program and get the Wald test result for  only the first
> equation, then I put the second equation ahead of the first
> equation in "ml model" and run again to get the
> result for the second equation. Then use -ml display- to
> combine the two results and display them together? Is this
> what you mean? I wonder if there is any way that I can run
> the MLE program only once and get the Wald test results for
> the two, or even more equations.
> 
> 
> 
> Hope you can give me more hints if possible.
> Thanks!
> 
> 
> 
> On Wed, Sep 16, 2009 at 3:53 PM,
> Maarten buis <maartenbuis@yahoo.co.uk>
> wrote:
> 
> 
> --- On Wed, 16/9/09, Tao Xiao
> wrote:
> 
> > I need to specify more than one model equations in
> 
> > -ml model- command. However, after the MLE routine ran
> to
> 
> > reach the maximum likelihood with the data, the
> 
> > -ml display- command can only display model
> significance
> 
> > test result of the 1st model equation in the header
> above
> 
> > the coefficient table - a Wald chi2 statistic value
> and
> 
> > the corresponding p-value. Because in our research,
> the
> 
> > model significance test result of the 2nd model
> equation
> 
> > is also important, I wonder if there is any way to
> display
> 
> > the model significance test results of the second
> model
> 
> > equation, or of more than two model equations. Or, can
> I
> 
> > get model significance test result for all the model
> 
> > equations combined together, not just for the 1st
> model
> 
> > equation?
> 
> 
> 
> If you want to display that test for each equation
> separately,
> 
> you will probably have to perform these tests -quietly-
> and
> 
> use -display- to display the results in some convenient
> way.
> 
> You can however force Stata to display a test whether the
> 
> effects of all covariates in multiple equations are
> 
> simultaneously equal to zero. This is done in your -ml
> model-
> 
> statement using the -waldtest()- option.
> 
> 
> 
> 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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> 
> 
> 
> 
> 
> 


      


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