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RE: st: marginal effects for ordered logit

From   "Markiewicz, Agnieska" <[email protected]>
To   <[email protected]>
Subject   RE: st: marginal effects for ordered logit
Date   Tue, 16 Nov 2004 17:12:02 +0100

Dear Marteen,

I just tried your formula with stata 8 but I get a strange message
after: class member function not found

Any idea what's wrong?

From: [email protected]
[mailto:[email protected]] On Behalf Of maartenbuis
Sent: Tuesday, November 16, 2004 4:09 PM
To: [email protected]
Subject: Re: st: marginal effects for ordered logit

Dear Aga,

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


drop _all
set obs 31         
gen mpg =11 + _n
gen odds = exp(_b[mpg]*mpg + _b[mpg2]*mpg^2)

graph odds mpg, c(l) 


I forgot the correct -graph- syntax for stata7 to make the pretty, but
this should get you started. 

--- <Agnieszka.Markiewicz@e...> wrote:
> Now when I know how to calculate the odds, could
> you help me with finding the right command to make a graph?

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