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From | "Alexander Staus" <Alexander.Staus@uni-hohenheim.de> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: data management |
Date | Wed, 16 May 2007 12:11:34 +0200 |
Dear Stata users, I want to combine different observations in a panel dataset. e.g. for hh 72 (=id) I want to sum the variable "value" if the firm is the same on one date, but other variables just stay as they are.
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