Date: Thu, 7 Jul 2011 21:57:05 +0200
Reply-To: Jon K Peck <peck@us.ibm.com>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Jon K Peck <peck@us.ibm.com>
Subject: Re: Matching/propensity scores for 3 groups
In-Reply-To: <1310036464.95012.YahooMailClassic@web81801.mail.mud.yahoo.com>
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Could you elaborate on what you mean by matching on three groups? Why
couldn't you compute the propensity scores based on all the relevent
variables and then match on those scores using your macro or the FUZZY
extension command?
Jon Peck
Senior Software Engineer, IBM
peck@us.ibm.com
new phone: 720-342-5621
From: Dale Glaser <glaserconsult@sbcglobal.net>
To: SPSSX-L@LISTSERV.UGA.EDU
Date: 07/07/2011 01:04 PM
Subject: [SPSSX-L] Matching/propensity scores for 3 groups
Sent by: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
Greetings.......I have used the SPSS macro (that I believe is discussed in
an article in Behavior Research and Methods) that uses propensity scores
(via binary logisitic regression) for matching two groups; however, I am
currently on a study that necessitates matching on three groups. So I was
curious what any of you have done for matching three groups using SPSS (I
will be matching on sex, Length of stay, and # of comorbidities)? Do you
think it would be problematic to use propensity scores from a multinomial
logistic regression (and insert such in the macro?). Or will that just
give me two sets of propensity scores (e.g., grp 1 vs grp 2; grp 1 vs grp
3, etc.)?
Otherwise, I do have Stata but have not used it for matching
purposes.......if SPSS is not equipped for 3 group matching, do you know
if Stata has a package that does such?
thank you very much in advance for any suggestions.....dale
Dale Glaser, Ph.D.
Principal--Glaser Consulting
Lecturer/Adjunct Faculty--SDSU/USD/Alliant
3115 4th Avenue
San Diego, CA 92103
phone: 619-220-0602
fax: 619-220-0412
email: glaserconsult@sbcglobal.net
website: www.glaserconsult.com
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