Software for Download
Programs for Computing Group Sequential Boundaries
Reboussin DM, DeMets DL, Kim KM, Lan KKG: Computations for group sequential boundaries using the Lan-DeMets spending function method. Controlled Clinical Trials 21(3):190-207, 2000
Sample Size
S-PLUS Sample Size programs for complex clinical trials with survival endpoints
Also available from Tom Cook's Software Page
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