LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (September 2003)Back to main SPSSX-L pageJoin or leave SPSSX-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Fri, 19 Sep 2003 16:20:15 -0500
Reply-To:     Paul R Swank <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Paul R Swank <>
Subject:      Re: repeated measures multiple comparisons
Comments: To: Paul Mcgeoghan <>
In-Reply-To:  <>
Content-Type: text/plain; charset="us-ascii"

Include hospital type as an independent variable (fixed effect) along with group.

Paul R. Swank, Ph.D. Professor, Developmental Pediatrics Medical School UT Health Science Center at Houston

-----Original Message----- From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of Paul Mcgeoghan Sent: Friday, September 19, 2003 1:33 PM To: SPSSX-L@LISTSERV.UGA.EDU Subject: repeated measures multiple comparisons


I have a customer who has measured Blood-glucose levels over 3 visits while Fasting and after eating. Therefore, there are 2 measures named Fasting and PostPar measured at 3 levels. There are 2 between subject factors named Hospital (2 groups, private and government) and Patient Group (control and study).

Within each hospital type, I can work out if there is a difference from visit 1 to visit 2, visit 2 to visit 3 for the control group and the study group seperately via the repeated measures syntax: /EMMEANS = TABLES(hospital*group*visit) compare(visit)

The customer would like for each hospital to compare the study group and the control group on the mean difference from visit 1 to visit 2 and visit 2 to visit 3 to see which group has had the biggest increase or decrease from visit to visit.

The only way in repeated measures I can see of doing this is to Split the file first by Hospital Type, enter the Patient Group as a Between Subject factor and choose Repeated Contrasts. Then the Test of Within-Subject Contrasts gives me the interaction between VISIT*GROUP comparing Level 1 to Level 2 and Level 2 to Level 3.

Is there another way in repeated measures of achieving this?

Thanks in advance, Paul

================== Paul McGeoghan, Application support specialist (Statistics and Databases), Information Services, Cardiff University. Tel. 02920 (875035).

Back to: Top of message | Previous page | Main SPSSX-L page