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Re: RE: st: Repeated Measures ANOVA and Missing Values

From   Philip Ender <>
Subject   Re: RE: st: Repeated Measures ANOVA and Missing Values
Date   Tue, 18 Oct 2011 08:10:09 -0700

<> wrote:

so I suppose for repeated measures without missing values, xtmixed or
r.anova are kind of the same thing !


Yes, -xtmixed, reml- without missing observations yields the exact
same results as repeated measures anova.  There are additional
benefits to -xtmixed- even for complete data.  -xymixed- allows for
covariance structure other than compound symmetry (exchangeable), such
as, ar1, using the -residuals- option.  With -xtmixed- you can also
have equally spaced time intervals that vary by subject.

Phil Ender
UCLA Statistical Consulting Group
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