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Re: st: gen lag variable


From   "Radu Ban" <raduban@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: gen lag variable
Date   Wed, 2 Aug 2006 16:15:30 -0400

in this case you have to use the -gen- instead of the -egen- command.

2006/8/2, irodriguez <irodriguez@utdt.edu>:
I have a panel data for 1200 firms by year (10 years for each firm)
I need to create a lagged variable of one called  roa but it must be lagged
for each firm
I tried with
by empresa: egen lagroa= roa[_n-1]
but the command give me this error: r(198)
What can I do?
Thanks


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