Barthel, Friederike M.-S.; Royston, Patrick; Parmar, … - In: Stata Journal 9 (2009) 4, pp. 505-523
We present menu- and command-driven Stata programs for the calculation of sample size, number of events, and trial duration for a novel type of clinical trial design with a time-to-event outcome and two or more experimental arms. The approach is based on terminating accrual of patients to...