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On the analysis of circular balanced crossover designs

✍ Scribed by J. Kunert

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
457 KB
Volume
69
Category
Article
ISSN
0378-3758

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✦ Synopsis

The paper considers Aza'is' (J. Roy. Statist. Soc. B, 49 (1987) 334-345) randomization procedure for circular balanced crossover designs. It is shown that this randomization does not justify the assumption of independent identically distributed errors when the estimates are corrected for carryover effects. This might lead to underestimation of the variance of treatment estimates. Similar to the results of Kunert (Biometrics, 43 (1987) 833-845) and Kunert and Utzig (J. Roy. Statist. Soc. B, 55 (1993) 919-927), we give constants, such that multiplication with this constant makes the usual estimate of variance conservative.

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