Monday, February 27, 2006

st: repeated anova

Dear all,

I am struggling with this seemly simple ANOVA, but I can't get it set correctly. I have 40 students randomly allocated to 4 experimental stress groups. The diastolic blood pressure was measured for each student at baseline and at five additional times. The lay out is something like this:

. table time group

---------------------------------- | group time | 0 1 2 3 ----------+----------------------- 0 | 10 10 10 10 1 | 10 10 10 10 2 | 10 10 10 10 3 | 10 10 10 10 4 | 10 10 10 10 5 | 10 10 10 10 ----------------------------------

Note that there are 10 students in each -group-, but each student was measured at 6 different times. Could someone please tell me what is the correct Stata command for this repeated ANOVA?

Thank you, Ricardo.

Ricardo Ovaldia, MS Statistician Oklahoma City, OK

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