typeOfDesign |
The type of design. Type of design is one of the following:
O'Brien & Fleming ("OF" ), Pocock ("P" ), Wang & Tsiatis Delta class ("WT" ),
Pampallona & Tsiatis ("PT" ), Haybittle & Peto ("HP"),
Optimum design within Wang & Tsiatis class ("WToptimum" ),
O'Brien & Fleming type alpha spending ("asOF" ), Pocock type alpha spending ("asP" ),
Kim & DeMets alpha spending ("asKD" ), Hwang, Shi & DeCani alpha spending ("asHSD" ),
user defined alpha spending ("asUser" ), no early efficacy stop ("noEarlyEfficacy" ),
default is "OF" .
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