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Re: st: collapse panel data for each year


From   Ada Ma <pec187@abdn.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: collapse panel data for each year
Date   Sat, 29 May 2004 17:23:19 +0100

it might worth you the time to check out the command -egen-?

say you trying to calculate the profit mean of each country:

bys country year: egen meanprofit=mean(profit)

Now you can have the mean / sum / sd / whatever by country in your original data set.



sarah smith wrote:

Dear Stata users:

I have panel data for several industries in 40 countries for 20 years. For each year, I am trying to collapse the data by country. I tried to use foreach and forvalues commands, but could not work it out. I would appreciate if you can help me.

Thnks,
sarah





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