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st: cross-over studies

From   "Patrick Mcelduff" <[email protected]>
To   [email protected]
Subject   st: cross-over studies
Date   Tue, 20 Apr 2004 12:09:00 +0100

Dear all,

I am analysing a 3 by 3 crossover study. I want to fit terms for 
subject, period, treatment and first-order carry-over effects. Can 
anyone tell me how to do this in Stata using ANOVA. 

I am currently fitting the model using xtreg but am concerned it 
uses a z-test rather than a t-test and I have too few subjects.

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