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RE: st: A logit approach that allows alternative specific variables


From   Peer Skov <peer_skov@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: A logit approach that allows alternative specific variables
Date   Wed, 10 Dec 2008 11:37:31 +0000

Hi Arne,
Thanks again!
When I run mfx I get the marginal effects evaluated at the mean of the variables for each education. 
I would like to specify the values at which the marginal effects are calculated. 
However when I use the at () option I specify the same life_earnings for all educational groups,
is it possible to specify different levels for each group?
 
In addition, I was hoping to be able to produce a figure for each educational level depicting prob(edu=1) on the y-axis 
and income on the x-axis. That is, similar to Greene fig. 19.2 (Econometric Analysis, Fourth Edition). 
Do you know of any useful commands in that regard? 

Again thanks for the help, it’s much appreciated. 
Best,
Peer.



 



> Date: Mon, 8 Dec 2008 22:25:42 +0000
> From: arnehole@gmail.com
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: A logit approach that allows alternative specific variables
> 
> Hi Peer,
> 
> No, the example in that thread applies to individual-specific
> explanatory variables.
> 
> This should do it though:
> 
> asclogit choice life_earnings sigp sige, case(id) alternatives(edu) noconst
> estat mfx
> 
> Hope this helps.
> 
> Arne
> 
> 2008/12/8 Peer Skov :
>> Hi Arne
>> Thanks for your reply!
>> If it's okay I have follow question regarding marginal effects.
>> I have read in the FAQ: http://www.stata.com/support/faqs/stat/mfx_unsuit.html that -mfx- is unsuitable for calculating marginal effects in the -clogit-.
>> However in your answer to Jim http://www.stata.com/statalist/archive/2006-08/msg00899.html
>> you provide him two alternatives to do so.
>> I was wondering if they also apply to my example?
>>
>> Thanks again for the help.
>>
>> Peer
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