Missing values in Repeated Measures

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#3494

From: JAN
Date: Wed, 26 Feb 1992 19:11

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Hi, STAT-Lers!

     Can anyone give me a good reference on repeated measures designs that
have missing values?  As a simple example, suppose I have 3 groups of 4
dogs each.  Each group receives a different dosage of a drug.  Measurements
are made on Days 0, 1, 2, and 3.  Some animals died after day 1, so they
do not have any data on days 2 and 3.  How can I handle this in my analysis?
Do I have to drop the entire animal or are their ways to "estimate" values
for my missing days?

     How does SAS handle this problem in PROC GLM?

Thanks,

Janet Buckingham
Southwest Research Institute
San Antonio, Texas  78228
512-522-2407

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Subject:      Missing values in Repeated Measures
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