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st: missing values in panel data


From   Schöler, Lisa <lschoeler@wiwi.uni-frankfurt.de>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: missing values in panel data
Date   Tue, 3 Aug 2010 19:21:10 +0000

Dear all, 

in my panel data set (unbalanced) I have a variable called "RD spendings". I have those data for the years 2001-2009 (sometimes less years) for 200 companies each year. Now I need to predict/forecast the missing data for 1999 and 2000. I think that -interpolate- is not possible. Looking at the trend between 2001 and 2009, I can tell that the spendings are rising most of the times. 
Can somebody give me a suggestion what would be the best solution with Stata?

Thank you
Lisa
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