Date:         Wed, 8 Oct 2003 08:08:19 -0400
Reply-To:     "Will Bailey [Statman]" <statmanz@earthlink.net>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         "Will Bailey [Statman]" <statmanz@earthlink.net>
Subject:      Re: missing data in AnswerTree
Comments: To: Sarah Boslaugh <boslaugh@slu.edu>
In-Reply-To:  <BBA895E1.3032%boslaugh@slu.edu>
Content-Type: text/plain; charset="US-ASCII"

Sarah, I agree, this is a frustrating feature. Not sure, but I think the
only way to exclude missing values is altering the split or via database
capture where you can specify inclusions. However, for the latter I don't
need to use and it is limited.

If you find another way do let us know.

WMB
Statistical Services
AT 3.1
SPSS 11.5.2.1

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-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of
Sarah Boslaugh
Sent: Tuesday, October 07, 2003 5:10 PM
To: SPSSX-L@LISTSERV.UGA.EDU
Subject: missing data in AnswerTree


For those of you who use AnswerTree, do you know a way to exclude missing
data within AnswerTree?  I don't want to do a listwise deletion on the input
data file but only on the variables which exist in a particular tree.  The
default seems to be to treat missing as a separate category within any
variable, which is leading to some anomalous results.


--
Sarah Boslaugh, PhD
Post-doctoral Fellow
Health Communication Research Laboratory
St. Louis University School of Public Health
3545 Lafayette Ave., 4th floor
St. Louis, MO  63104

phone:  314-977-4098
fax:    314-977-4016
boslaugh@slu.edu; sboslaugh@yahoo.com

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