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st: Marginal effects for dummy variables in ordered probit.


From   Usha Sambamoorthi <[email protected]>
To   [email protected]
Subject   st: Marginal effects for dummy variables in ordered probit.
Date   Thu, 15 May 2003 11:29:12 -0400 (EDT)

to this  particular problem.
----------------------
WHenever i request mfx for dummy variables in ordered probit,
some of them seem to be evaluated at means rather as a discrete change?

How do i calculate mfx for all dummy variables as a discrete change?
In the example given below although Ifemale, Irace_2 are dummy
variables, mfx is not for discrete change from 0 to 1.
Is there a way i can request Stata to make them all discrete change?
------------------------------------
Example:
Marginal effects after svyoprobit
      y  = Pr(adp0123==0) (predict, outcome(0))
         =  .38169908
------------------------------------------------------------------------------
variable |      dy/dx    Std. Err.     z    P>|z|  [    95% C.I.   ]      X
---------+--------------------------------------------------------------------
_Ifema~1 |  -.0292209      .02906   -1.01   0.315  -.086177  .027735   .562267
_Irace_2 |   .0704648      .04161    1.69   0.090  -.011084  .152014   .148739
_Ieduc~2*|  -.0303787      .02179   -1.39   0.163   -.07309  .012332   .591935
------------------------------------------------------------------------------
(*) dy/dx is for discrete change of dummy variable from 0 to 1




*=*=*=*=*=*=*=*=*=*=*=*=*=*=*
Usha Sambamoorthi, PhD
Associate Research Professor
Division on AIDS/AGING
IHHCPAR, Rutgers University
30, College Avenue
New Brunswick, NJ 08901

732-932-8637 (Voice)
732-932-6872 (Fax)
[email protected] (email)


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