
From  "Brian P. Poi" <bpoi@stata.com> 
To  statalist@hsphsun2.harvard.edu 
Subject  Re: st: Different numbers of observations in sureg 
Date  Mon, 14 May 2007 10:02:47 0500 (CDT) 
On Mon, 14 May 2007 09:16:36 0400 Alemu Mekonnen wrote:
I would like to use different number of observations in the different equations when using the seemingly unrelated regression command in stata (i.e., sureg). For example, if there are two equations, I wanted to use 600 observations for equation 1 and 900 observations for equation 2. My question is how do I limit the number of observations to do this. I was not able to use the IF command but this applies to all the equations in the system.Alemu,
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