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st: deriving the variance-covariance matrix from point estimates and standard errors


From   "Monuteaux, Michael" <Michael.Monuteaux@childrens.harvard.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: deriving the variance-covariance matrix from point estimates and standard errors
Date   Thu, 23 Jun 2011 10:13:14 -0400

Hello everyone,
 
I have two point estimates and their corresponding standard errors from a survey, and I want to calculate the 2-by-2 variance-covariance matrix.  Is there a way to do this in STATA?  Please note, I do not have the original data, I just have the following info:
The point estimate (in this case, it's the estimated number of cases who answered "yes" to a particular item in the survey)
The standard error, and 
The number of records that the estimate was calculated from.
 
Any help would be appreciated.  Thanks!!
 
Michael C. Monuteaux, Sc.D.
Children's Hospital Boston



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