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RE: st: marginal effects for ordered logit


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: marginal effects for ordered logit
Date   Tue, 16 Nov 2004 16:15:41 -0000

-graph odds mpg- is Stata 7 speak. 

In Stata 8 you want perhaps

line odds mpg 

Nick 
n.j.cox@durham.ac.uk 

Markiewicz, Agnieska
 
> I just tried your formula with stata 8 but I get a strange message
> after: 
> global_g.new: class member function not found
 
maartenbuis
 
> If you had Stata8 you could have used my earlier post:
> 
> -twoway function y = exp(-_b[mpg]*x- _b[mpg2]*x^2), range(12 41) 
> ytitle("odds") xtitle("mpg")- gives you the odds of belonging to a
> group versus all `lower' groups.
> 
> now you could do something like: 
> 
> version 7
> sysuse auto
> gen mpg2 = mpg^2
> ologit rep78 mpg mpg2
> 
> preserve
> 
> drop _all
> set obs 31         
> gen mpg =11 + _n
> gen odds = exp(_b[mpg]*mpg + _b[mpg2]*mpg^2)
> 
> graph odds mpg, c(l) 
> 
> restore
> 

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