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Date:   Fri, 22 Jan 2010 12:29:49 +0100
Reply-To:   Daniel Fernández <fdezdan@GMAIL.COM>
Sender:   "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:   Daniel Fernández <fdezdan@GMAIL.COM>
Subject:   Re: Lag function-quarterly data
Comments:   To: SAS user <sasuser4@googlemail.com>
In-Reply-To:   <201001221115.o0MAoBgu027680@malibu.cc.uga.edu>
Content-Type:   text/plain; charset=ISO-8859-1

hi,

how mnay lags you want? Do you compare 1974Q3 to 1974Q2 ? Or 4 quarters a year?

Daniel

2010/1/22 SAS user <sasuser4@googlemail.com>: > Here is a sample of my data; I have around 600,000 observations > ID yearqtr variable1 variable2 > 006 1974Q4 200 300 > 006 1974Q3 100 153 > 006 1974Q2 360 256 > 006 1974Q1 256 369 > 006 1975Q4 369 257 > 006 1975Q3 596 589 > 006 1975Q2 965 125 > 006 1975Q1 259 789 > 005 > > > etc > > > > 004 > > etc > Any suggestions will be greatly appreciated. >

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