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st: changing number of observations


From   "Moore, Jesse" <Jesse.Moore@vtmednet.org>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: changing number of observations
Date   Mon, 28 May 2007 10:16:59 -0400

I have a large do file that I've created to clean a dataset.  It
includes some merging as well as forvalues commands.  The first line of
code is use "filepath", clear

I've run it five times now and each time there has been a different
number of observations at the end (n=7639, 7637, 7645, 7629, and 7641)

It seems that if the do file starts with the same file and does the same
thing every time it should be returning the same observations every
time.  Any ideas on what is happening here?

Thanks.

Jesse Moore, MD
General Surgery Resident
Fletcher Allen Healthcare
University of Vermont
802-847-5097


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