| Literature DB >> 27307025 |
Jianrong Wu1, Xiaoping Xiong2.
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.Entities:
Keywords: group sequential trial design; historical control; information time; log-rank test; sample size; time-to-event
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Year: 2016 PMID: 27307025 PMCID: PMC5468795 DOI: 10.1002/pst.1756
Source DB: PubMed Journal: Pharm Stat ISSN: 1539-1604 Impact factor: 1.894