Group Sequential Analysis of Clinical Trials
Design of non-binding futility analysis at multiple points
Plot the planned futility boundaries
Plot the power function of the planned analysis
Print basic information about the futility design
Print method for summary.fut objects
Detailed summary of the futility design
Design of group sequential trials, including non-binding futility analysis at multiple time points (Gallo, Mao, and Shih, 2014, <doi:10.1080/10543406.2014.932285>).