Date: Fri, 8 Jan 1999 14:55:45 -0500
Reply-To: Robert Morlock <rmorloc1@SMTPGW.IS.HFH.EDU>
Sender: "SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>
From: Robert Morlock <rmorloc1@SMTPGW.IS.HFH.EDU>
Subject: Grouping by Month and Year (?)
Does anyone know of an efficient way to group by month and year?
I have a date variable MMDDYY and want to get at the means of another
variable by month and year. For example I need the average of X for
each month 1/97, 2/97, .... ,12/98.
Thanks in advance for your help.
Henry Ford Health System
Center for Clinical Effectiveness