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st: preserving missing values when using total


From   Srini <srini_vaduvoor@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: preserving missing values when using total
Date   Sat, 7 Mar 2009 16:15:13 -0800 (PST)

Hi,

After data manipulation, I have a data set with multiple observations per month and year. I created a variable using total function, but realized that it replaced missing values with zeroes.

district 1
district 2


      

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