JSM 2004 - Toronto

Abstract #301917

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Activity Number: 438
Type: Contributed
Date/Time: Thursday, August 12, 2004 : 10:30 AM to 12:20 PM
Sponsor: Biopharmaceutical Section
Abstract - #301917
Title: Confounded Cross-over Designs for Factorial Experiments
Author(s): Sourav Santra*+ and Sudhir Gupta
Companies: Northern Illinois University and Northern Illinois University
Address: Division of Statistics, DeKalb, IL, 60115,
Keywords: change-over design ; confounding ; cross-over design ; extra-period design ; factorial experiment ; repeated measures design
Abstract:

Although cross-over designs for comparing treatments have been considered by several authors, factorial structure in cross-over designs has been studied only recently. Often some higher order interactions can be safely assumed to be zero in factorial experiments. Confounded cross-over designs for symmetrical factorial experiments with number of levels a prime or power of a prime are studied in this paper. In addition to having factorial structure, all estimable direct main effects and interactions are estimated with a constant variance, and all estimable residual main effects and interactions are estimated with a constant variance in these designs. Extra-period confounded cross-over designs are also studied.

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