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PowerTOST (version 1.3-5)

bib.CL: Design matrices of period balanced incomplete block designs

Description

This function returns the 'design' matrix of incomplete block designs described in Chow & Liu's book. The design matrices where recoded 1=R, 2=T1, 3=T2 ...

Usage

bib.CL(trt, p)

Arguments

trt
Number of treatments (3 to 5).
p
Number of periods (2 to trt-1).

Value

  • Matrix containing the sequences in rows and periods in columns. The entry (i,j) of the matrix corresponds to the treatment or dose (index) a subject within i-th sequence gets in the j-th period.

References

Chow, Liu "Design and Analysis of Bioavailability and Bioequivalence Studies" Third edition, Chapman and Hall/CRC 2008 Chapter 2.6

Examples

Run this code
# 4 treatments/doses, 3 periods
bib.CL(4,3)
# gives 4 sequences
# to see this in Chow & Liu's coding
tmt <- c("R", "T1", "T2", "T3")
matrix(tmt[bib.CL(4,3)], ncol=3)

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