Date: Thu, 3 Nov 2011 12:26:12 -0400
Reply-To: Jan McClure <mc006@PACBELL.NET>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Jan McClure <mc006@PACBELL.NET>
Subject: Compute command and System User missing
I'm a doctoral student (epidemiology)and have not used SPSS in awhile. I'm
trying to do something quite simple but am running into a problem with
system missing and user missing values.
Old variables are H_now (no missing values) and H_12mo which has 3 system
missing and 7 user missing (99).
I want to create a new variable (hosp). I set the new variable to 8 so that
any cases that "fall thru" will be evident to me. Indeed, 10 cases fall thru
and are listed as an "8". These are the 3 sysmis and the 7 user missing (99).
if H_now EQ 1 hosp = 1.
if (H_now EQ 0 and H_12mo EQ 1) hosp = 2.
if (H_now EQ 0 and H_12mo EQ 0) hosp = 3.
If H_12mo EQ 99 hosp = 98.
Variable labels hosp 'outcome'.
Value labels hosp 3 'no event' 2'12 mo event' 1'immediate event'.
Thanks for any help,
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