st: Re: AW: RE: marginal effects for IV ordered probit

[xueliansharon <xuelianstata@gmail.com>]

Hi Martin,

So do you mean that you didn't get an error message when you computed
marginal effects after running my example of cmp on your Stata?

I don't know how to check the version of my "mfx", but my stata version is
11.1, so I guess the version of "mfx" in my stata should not be the old one,
then how can I get the correct standard errors? Do you have any suggestions?

Many thanks,
Sharon

<> 

There is always a good reason why Stata refuses to do certain things, so 
-force- may not be such a good idea. Could also be that you are simply out 
of luck with the se for the marginal effect. -h cmp- does state that "force 
may be needed when running old versions of mfx to stop this behavior." But 
"old" is apparently defined as pre January 2008 versions of -mfx-, which 
mine is not. 



HTH 
Martin 
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