selectArmsFunction |
Optionally, a function can be entered that defines the way of how treatment arms
are selected. This function is allowed to depend on effectVector with length activeArms ,
stage , "conditionalPower" , "conditionalCriticalValue" , "plannedSubjects/plannedEvents" ,
"allocationRatioPlanned" , "selectedArms" , "thetaH1" (for means and survival), "stDevH1" (for means),
"overallEffects" , and for rates additionally: "piTreatmentsH1" , "piControlH1" , "overallRates" , and
"overallRatesControl" .
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