randomizeR: crPar – R documentation

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randomizeR

crPar

Representing Complete Randomization

Description

Represents the randomization procedure Complete Randomization.

Usage

crPar(N, K = 2, ratio = rep(1, K), groups = LETTERS[1:K])

Arguments

`N`	integer for the total sample size of the trial.
`K`	number of treatment groups (e.g. K=2 if we compare one experimental against one control treatment).
`ratio`	vector of length `K`. The total sample number `N` and all used block lengths (`bc`) have to be divisible by `sum(ratio)`.
`groups`	character vector of labels for the different treatments.

Details

Toss a fair coin N times in case K=2 and assign the treatments according to the result of the coin. In case of K>2, replace the coin by a die with K sides.

Value

S4 object of the class crPar.

References

W. F. Rosenberger and J. M. Lachin (2002) Randomization in Clinical Trials. Wiley.