Efficient block designs for comparing du
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A. Gerami; S.M. Lewis; D. Majumdar; W.I. Notz
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Article
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1998
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Elsevier Science
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English
โ 129 KB
Experiments in blocks having two treatment factors are considered in which a particular treatment must be excluded. The work is motivated by medical trials of two drugs in which a double placebo cannot be administered on ethical grounds. The contrasts of interest compare the e ects of having both tr