asOBF {GroupSeq} | R Documentation |
This alpha spending function approximates alphaStar-function O'Brien and Fleming-type.
asOBF(alpha, tk, OneOrTwoSidedBounds)
alpha |
is the desired overall size. |
tk |
is current point of time |
OneOrTwoSidedBounds |
One-('OneOrTwoSidedBounds'==1) or Two-sided bounds('OneOrTwoSidedBounds'==2) are used |
see description
This function is meant to be called in context of using groupseq
Roman Pahl
groupseq
, alphaByUseFunction
, asPowerFamily
asHSdeCani
, asPocock
##simple example with result: [1] 0.2578086 asOBF(0.05,3,1)