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Bruce W. Turnbull
Researcher at Cornell University
Publications - 125
Citations - 13178
Bruce W. Turnbull is an academic researcher from Cornell University. The author has contributed to research in topics: Sample size determination & Cancer. The author has an hindex of 42, co-authored 125 publications receiving 12726 citations. Previous affiliations of Bruce W. Turnbull include Durham University & University of Oxford.
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Statistical models for longitudinal biomarkers of disease onset.
TL;DR: The analysis of serial biomarkers to screen and monitor individuals in a given population for onset of a specific disease of interest and concentrate on two recently proposed models that lead to a dynamic index that represents a strength of evidence that onset has occurred by the current time in an individual subject.
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Obtaining Distribution Functions by Numerical Inversion of Characteristic Functions with Applications
TL;DR: In this paper, numerical inversion of the characteristic function is used as a tool for obtaining cumulative distribution functions, which is suitable for instructional purposes, particularly in the illustration of the inversion theorems covered in graduate probability courses.
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Adaptive seamless designs: selection and prospective testing of hypotheses.
TL;DR: Where gains are possible using the adaptive approach, a variety of logistical, operational, data handling and other practical difficulties remain to be overcome if adaptive, seamless designs are to be effectively implemented.
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Analysis of multi-type recurrent events in longitudinal studies; application to a skin cancer prevention trial
TL;DR: An application to a large ongoing randomized controlled clinical trial for the efficacy of nutritional supplements of selenium for the prevention of two types of skin cancer is described.
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Group sequential enrichment design incorporating subgroup selection.
TL;DR: Numerical results show that the adaptive enrichment group sequential procedure has high power to detect subgroup-specific effects and the use of multiple interim analysis points can lead to substantial sample size savings.