|Date: ||Wed, 2 Nov 2005 15:02:32 -0500|
|Reply-To: ||Richard Ristow <email@example.com>|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>|
|From: ||Richard Ristow <firstname.lastname@example.org>|
|Subject: ||Re: brain teaser|
|Content-Type: ||text/plain; charset="us-ascii"; format=flowed|
At 12:33 PM 11/2/2005, Jean Campbell wrote:
>I'm not sure if this is an SPSS question..but I've lost patience.
It's certainly a data-transformation problem that can be solved in
SPSS, of a type that very commonly is.
It shouldn't be hard, either; a modest exercise in AGGREGATE. But,
>I am trying to determine the % of subjects who experience an adverse
>event (symptom) by their treatment group (1,2, or 3).
Here's the problem
>Each subject could have reported multiple adverse events, so the data
>Subj ID AE Txt group
>1 2 1
It looks like you have a record for each AE experienced by each
subject; and you have the treatment group for each subject. But what
record do you have of subjects who have no adverse events? Without
that, I don't see how you can calculate thing like "% of subjects who
experience an adverse event", except by counting the number of subjects
with an AE and dividing by hand.