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st: egen to calculate industry medians with own frim excluded


From   "Erasmo Giambona" <e.giambona@gmail.com>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: egen to calculate industry medians with own frim excluded
Date   Wed, 19 Dec 2007 12:42:50 +0100

Dear Statalisters,

I am using the following code to get the median of my ffo variable
within a certain industry/year for a sample of firms:

egen ffo=median(med_ffoq ), by(industry year).

However, I need to exclude the own firm before calculating the
industry median for ffo. Does anyone has any suggestions on how I
could do this with egen or any other command?

Any help would be appreciated.
Regards,
Erasmo
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