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Re:Re: Re: st: How do I run a 3-way repeated ANOVA?


From   "Airey, David C" <david.airey@Vanderbilt.Edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re:Re: Re: st: How do I run a 3-way repeated ANOVA?
Date   Fri, 19 Mar 2010 11:51:39 -0500

/* Here are the two parameterizations Phil spoke of and 
xtmixed equivalents with anovalator for the two way
within subjects model. Phil's commands gets the same F ratios.  */

use http://www.ats.ucla.edu/stat/stata/examples/kirk/rbf33, clear

anova y s a b a#b, repeated(a b) 

xtmixed y a##b || s:

anovalator a b, main fratio
anovalator a b, two fratio

anova y s a/s#a b/s#b a#b/, repeated(a b)

xtmixed y a##b || s: || s:R.a || s:R.b

anovalator a b, main fratio
anovalator a b, two fratio

/* I guess the three within factor model should work too, 
with anovalator, for the 2 parameterizations 
but i'm not sure (i.e., I stumbled). */

Linn,

Can you check your data set with these commands and report back? Thanks.

anova y s a/s#a  b/s#b c/s#c a#b/s#a#b  a#c/s#a#c  b#c/s#b#c a#b#c/, repeated(a b c)
xtmixed y a##b##c || s: || s:R.a || s:R.b || s:R.c

anovalator a b c, main fratio
anovalator a b, two fratio
anovalator a c, two fratio
anovalator b c, two fratio
anovalator a b c, 3way fratio

anova y s a##b##c , repeated(a b c)
xtmixed y a##b##c || s:

anovalator a b c, main fratio
anovalator a b, two fratio
anovalator a c, two fratio
anovalator b c, two fratio
anovalator a b c, 3way fratio






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