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st: unit variance command with mprobit

From   saqlain raza <>
To   Stata <>
Subject   st: unit variance command with mprobit
Date   Tue, 15 Nov 2011 12:14:56 -0800 (PST)

Hi Statalist users,

I want to show in the model -mprobit- that the error terms have unit variance for any two choices out of 4 and the off diagonal elements of the matrix are zero. How could it be possible using any command in Stata? 

Saqlain RAZA
PhD Student ( 

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