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Survival trial design and monitoring using historical controls
Authors:Jianrong Wu  Xiaoping Xiong
Institution:Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA.
Abstract:In this paper, we propose a multistage group sequential procedure to design survival trials using historical controls. The formula for the number of events required for historical control trial designs is derived. Furthermore, a transformed information time is proposed for trial monitoring. An example is given to illustrate the application of the proposed methods to survival trial designs using historical controls. Copyright © 2016 John Wiley & Sons, Ltd.
Keywords:group sequential trial design  historical control  log‐rank test  information time  sample size  time‐to‐event
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