crPar function

Representing Complete Randomization

Represents the randomization procedure Complete Randomization.

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.

Returns

S4 object of the class crPar.

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.

References

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

See Also

Other randomization procedures: abcdPar, bbcdPar, bsdPar, chenPar, createParam(), ebcPar, gbcdPar, hadaPar, mpPar, pbrPar, rarPar, rpbrPar, rtbdPar, tbdPar, udPar