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st: re: ANOVA model


From   David Airey <[email protected]>
To   [email protected]
Subject   st: re: ANOVA model
Date   Sat, 28 Sep 2002 12:27:27 -0500

Dear Statalist and Ken,

Sorry for the split emails.

In the nested repeated measures ANOVA, does the formulation on page 46 [R] anova matter given these two situations:

----------------------------------------------------------------------
Animal 1 2 3 4 5
/ \ / \ / \ / \ / \
Treatment 1 2 1 2 1 2 1 2 1 2
/ \ / \ / \ / \ / \ / \ / \ / \ / \ / \
Neuron 01-03 04-06 07-10 11-12 13-15 16-18 19-21 22-24 25-27 28-30
----------------------------------------------------------------------

----------------------------------------------------------------------
Animal 1 2 3 4 5
/ \ / \ / \ / \ / \
Treatment 1 2 1 2 1 2 1 2 1 2
/ \ / \ / \ / \ / \ / \ / \ / \ / \ / \
Neuron 01-03 01-03 04-06 04-06 07-09 07-09 10-12 10-12 13-15 13-15
----------------------------------------------------------------------

Note that in the first, neurons are different in each treatment in each animal and in the second model neurons from the same animal get both treatments.

-Dave

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