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- W2253206865 abstract "We consider conditional estimation in two-stage sample size adjustable designs and the following bias. More specifically, we consider a design which permits raising the sample size when interim results look rather promising, and, which keeps the originally planned sample size when results look very promising. The estimation procedures reported comprise the unconditional maximum likelihood, the conditionally unbiased Rao-Blackwell estimator, the conditional median unbiased estimator, and the conditional maximum likelihood with and without bias correction. We compare these estimators based on analytical results and by a simulation study. We show in a real clinical trial setting how they can be applied." @default.
- W2253206865 created "2016-06-24" @default.
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- W2253206865 date "2016-02-01" @default.
- W2253206865 modified "2023-09-27" @default.
- W2253206865 title "Estimation in Two-stage Adaptive Designs" @default.
- W2253206865 hasPublicationYear "2016" @default.
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