Parameter Description: Type of Design
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"
), default is "OF"
.