Date:         Fri, 12 Jul 2002 10:25:06 +0100
Reply-To:     Peter Watson <peter.watson@mrc-cbu.cam.ac.uk>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Peter Watson <peter.watson@mrc-cbu.cam.ac.uk>
Subject:      Re: post hoc tests in GLM
Comments: To: Rochelle Reno <rreno@ucla.edu>
In-Reply-To:  <002401c2296a$1d59ece0$9d1743a4@RochelleReno>
Content-Type: TEXT/PLAIN; charset=US-ASCII

A quick possible fix:I find using the options button in the repeated
measures window and putting the factor of interest in the display means
for window, then clicking on compare main effects allows you to choose
various adjustments for multiple tests. This will handle a constant
covariate (varying across subjects which I would assume age usually is).

For a varying covariate (ie one that varies with the level of the
repeated measure) one would need syntax unless you are lucky enough
to have the version 6.0 dialogue box.

Best

Peter

On Thu, 11 Jul 2002, Rochelle Reno wrote:

> My design is a 1 factor (3 levels) repeated measures MANOVA with 5 levels of
> the dependent variable. Age is a covariate. SPSS GLM - Repeated Measures
> will not allow post hoc tests (i.e., button grayed out) on the age adjusted
> DV marginal means. How, then, do I control the error rate for paired
> comparisons between the 3 levels of the IV?
>
> Thanks to anyone.
>


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"                                                   "
 A pinch of probability is worth a pound of perhaps

                                                James Thurber



Peter Watson
MRC Cognition and Brain Sciences Unit
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Cambridge
CB2 2EF

Tel:   +44 01223 355294 Ext. 801
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Email: peter.watson@mrc-cbu.cam.ac.uk