Date:         Mon, 18 Apr 2005 12:56:05 +0200
Reply-To:     la volta statistics <schmidhauser@lavolta.ch>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         la volta statistics <schmidhauser@lavolta.ch>
Subject:      AW: select cases
Comments: To: Kim Smolderen <k.g.e.smolderen@UVT.NL>
In-Reply-To:  <200504180901.j3I91ssu019560@listserv.cc.uga.edu>
Content-Type: text/plain; charset="iso-8859-1"

Hi Kim

provided that the 'measure-moments' are ordered the following syntax should
work:

DATA LIST LIST /id    flu    stress    stresswk      fluwk.
BEGIN DATA
1     1      0         1             1
2     1      1         2             2
3     1      0         3             3
4     0      1         4             4
END DATA.

If LAG(Stress) = 1 flag  = 1.
exec.
Select if flu = 1 AND flag = 1 .
exec.

Hope this helps,
Christian

-----Ursprüngliche Nachricht-----
Von: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU]Im Auftrag von
Kim Smolderen
Gesendet: Montag, 18. April 2005 11:02
An: SPSSX-L@LISTSERV.UGA.EDU
Betreff: select cases


Hi,

This is the data-format:

id    flu    stress    stresswk      fluwk
1     1      0         1             1
2     1      1         2             2
3     1      0         3             3
4     0      1         4             4

I want to select cases if:
flu=1 AND stress=1, but stress=1 has to be one measure-moment before flu=1.
So in the example above, only casenumber 3 has to be selected,
because 'stress' was present one measure-moment before the occurence
of 'flu'.

I would appreciate your help.

Kind Regards,
Kim Smolderen
Tilburg University