Point estimation and p‐values in phase II adaptive two‐stage designs with a binary endpoint
Point estimation and p‐values in phase II adaptive two‐stage designs with a binary endpoint
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具有二元端点的 II 期自适应双阶段设计中的点估计和 pâvalues
DOI:
10.1002/sim.7200
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发表时间:
2017
影响因子:
2
通讯作者:
Kieser
中科院分区:
文献类型:
--
作者:
Kunzmann;Kieser
Clinical trials in phase II of drug development are frequently conducted as single‐arm two‐stage studies with a binary endpoint. Recently, adaptive designs have been proposed for this setting that enable a midcourse modification of the sample size. While these designs are elaborated with respect to hypothesis testing by assuring control of the type I error rate, the topic of point estimation has up to now not been addressed. For adaptive designs with a prespecified sample size recalculation rule, we propose a new point estimator that both assures compatibility of estimation and test decision and minimizes average mean squared error. This estimator can be interpreted as a constrained posterior mean estimate based on the non‐informative Jeffreys prior. A comparative investigation of the operating characteristics demonstrates the favorable properties of the proposed approach. Copyright © 2016 John Wiley & Sons, Ltd.
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