L
L. J. Wei
Researcher at University of South Carolina
Publications - 16
Citations - 1765
L. J. Wei is an academic researcher from University of South Carolina. The author has contributed to research in topics: Restricted randomization & Covariate. The author has an hindex of 9, co-authored 16 publications receiving 1682 citations. Previous affiliations of L. J. Wei include Harvard University & George Washington University.
Papers
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Journal ArticleDOI
The Randomized Play-the-Winner Rule in Medical Trials
L. J. Wei,S. Durham +1 more
TL;DR: In this article, a simple randomized treatment assignment rule is proposed and analyzed in a sequential medical trial, and on the average this rule assigns more patients to the better treatment, and it is applicable to the case where patients have delayed responses to treatments.
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Survival analysis with median regression models
TL;DR: In this paper, the authors proposed semiparametric procedures to make inferences for median regression models with possibly censored observations using simulated annealing algorithm, which can be implemented efficiently using a simulated annesaling algorithm.
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Two-Sample Asymptotically Distribution-Free Tests for Incomplete Multivariate Observations
L. J. Wei,John M. Lachin +1 more
TL;DR: In this article, the authors proposed asymptotically distribution-free tests for equality of two multivariate distributions based on censored observations and obtained the multivariate versions of the Gehan and log-rank tests.
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An Application of an Urn Model to the Design of Sequential Controlled Clinical Trials
TL;DR: In this paper, a treatment assignment rule is proposed that forces a small subtrial to be balanced, but tends toward the complete randomization scheme as the size of the subtrial increases.
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The Adaptive Biased Coin Design for Sequential Experiments
TL;DR: In this article, the adaptive biased coin design, which offers a compromise between perfect balance and complete randomization, is proposed and analyzed, which has the property that it forces a small-sized experiment to be balanced, but tends toward the complete randomisation scheme as the size of the experiment increases.