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Re: st: mfx failing with tobit?
From
Roger Cremades Rodeja <[email protected]>
To
[email protected]
Subject
Re: st: mfx failing with tobit?
Date
Mon, 17 Mar 2014 17:30:29 +0100
Dear Marteen,
it was extremely helpful, I will see what can I do with stata 10, or
use the 12th of a colleague,
always grateful for your comments
Best wishes,
Roger
2014-03-17 14:26 GMT+01:00 Maarten Buis <[email protected]>:
> -mfx- is a general purpose program, so it needs to choose a default
> outcome for which to compute the derivative. It chooses that default
> to be the default chosen for the predict option of the command, which
> in the case of -tobit- happens to be the linear predictor. So the
> default marginal effect computed for -tobit- is just the coefficients.
> If you want to change that, you need to specify the -predict()- option
> to whatever outcome you are interested in.
>
> Notice however, that since you did not specify the version of Stata
> you are using we must, per the Statalist FAQ, assume you use the
> latest version of Stata (13). In that case the -mfx- command is
> hopelessly outdated, and you should use the -margins- command instead.
>
> Hope this helps,
> Maarten
>
>
> On Mon, Mar 17, 2014 at 11:13 AM, Roger Cremades Rodeja
> <[email protected]> wrote:
>> Dear colleagues,
>>
>> after running a Tobit regression, I introduce the mfx command and
>> surprisingly I get exactly the same coefficient estimates I had from the
>> regression, although labelled as dy/dx. Does anybody had a similar problem?
>>
>> Please any suggestions to solve it? They would be more than welcome.
>>
>> Best wishes,
>> Roger
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/faqs/resources/statalist-faq/
>> * http://www.ats.ucla.edu/stat/stata/
>
>
>
> --
> ---------------------------------
> Maarten L. Buis
> WZB
> Reichpietschufer 50
> 10785 Berlin
> Germany
>
> http://www.maartenbuis.nl
> ---------------------------------
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/