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st: marginal effects for ivprobit


From   Matt D Mitchell <[email protected]>
To   [email protected]
Subject   st: marginal effects for ivprobit
Date   Thu, 25 Jan 2007 11:34:52 -0500

Hello,

I am trying to obtain marginal effects on ivprobit.  

As I understand it, I need to use the post-estimation command mfx, predict(p).  "mfx" alone will not work (it does not give the marginal effects, I believe).  When I use the predict(p) command, however, Stata reports that the expression is unsuitable for calculating standard errors.  I know I can force it, but Stata says this may not be recommended.  Is it okay to use force if the relative difference is very small?   

Any recommendations on how I can obtain the marginal effects of an ivprobit and good standard errors?  

Much appreciated,

Matt

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