Represents the randomization procedure Efron's Biased Coin Design.
ebcPar(N, p, groups = LETTERS[1:2])integer for the total sample size of the trial.
success probability of the biased coin (e.g. in Efron's Biased Coin Design).
character vector of labels for the different treatments.
S4 object of the class ebcPar.
Flip a biased coin with probability p in favour of the treatment
which is allocated less frequently. If both treatments have been assigned
equally often a fair coin is tossed.
B. Efron (1971) Forcing a sequential experiment to be balanced. Biometrika, 58, 403-17.
Other randomization procedures: abcdPar,
bbcdPar, bsdPar,
chenPar, crPar,
createParam, gbcdPar,
hadaPar, mpPar,
pbrPar, rarPar,
rpbrPar, rtbdPar,
tbdPar, udPar