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Activity Number: 481
Type: Contributed
Date/Time: Wednesday, August 9, 2006 : 2:00 PM to 3:50 PM
Sponsor: General Methodology
Abstract - #305870
Title: Partially Repeated Measurements
Author(s): Mitchell Watnik*+ and Erica Wong and David Schlessinger
Companies: California State University, East Bay and California State University, East Bay and California State University, East Bay
Address: Department of Statistics, Hayward, CA, 94542,
Keywords: mixed models ; repeated measures ; incomplete data
Abstract:

A problem that occasionally arises in practice occurs when individuals are observed for a particular trait, but some individuals are measured only once, while others are seen multiple times. We refer to this situation as "partially repeated measures". We present the problem formally and develop a solution to it, along with SAS and R code to obtain estimates for parameters. This scenario will be motivated by an example from our consulting.


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Revised April, 2006