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st: Problem returning the e(V) covariance matrix for looped regression


From   sharoncatherine <sharon.walsh@esri.ie>
To   statalist@hsphsun2.harvard.edu
Subject   st: Problem returning the e(V) covariance matrix for looped regression
Date   Mon, 10 Oct 2011 03:37:55 -0700 (PDT)

Dear Stata users,

I have StataSE 11 for Windows. I have sorted my data by country of origin
and I ran an OLS regression *by* country. I now need to get the covariance
matrix for each country, however, when I enter the command matrix list e(V)
it only returns the most recently run regression which in this instance is
the last country in the list. I would really appreciate if someone could
guide me as to how to get the covariance matrix for each country run.

Any help would be greatly appreciated!!

Sharon

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