Hybrid Frequentist/Bayesian Power and Bayesian Power in Planning Clinical Trials

Andrew P. Grieve

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English

Chapman & Hall/CRC
20 June 2022

Clinical trials; Epidemiology & medical statistics; Probability & statistics; Biology, life sciences; Pharmaceutical technology

Series: Chapman & Hall/CRC Biostatistics Series

Hybrid Frequentist/Bayesian Power and Bayesian Power in Planning Clinical Trials provides a practical introduction to unconditional approaches to planning randomised clinical trials, particularly aimed at drug development in the pharmaceutical industry. This book is aimed at providing guidance to practitioners in using average power, assurance and related concepts. This book brings together recent research and sets them in a consistent framework and provides a fresh insight into how such methods can be used.

Features:

A focus on normal theory linking average power, expected power, predictive power, assurance, conditional Bayesian power and Bayesian power. Extensions of the concepts to binomial, and time-to-event outcomes and non-inferiority trials An investigation into the upper bound on average power, assurance and Bayesian power based on the prior probability of a positive treatment effect Application of assurance to a series of trials in a development program and an introduction of the assurance of an individual trial conditional on the positive outcome of an earlier trial in the program, or to the successful outcome of an interim analysis

Prior distribution of power and sample size Extension of the basic approach to proof-of-concept trials with dual success criteria Investigation of the connection between conditional and predictive power at an interim analysis and power and assurance Introduction of the idea of surety in sample sizing of clinical trials based on the width of the confidence intervals for the treatment effect, and an unconditional version.

By: Andrew P. Grieve
Imprint: Chapman & Hall/CRC
Country of Publication: United Kingdom
Dimensions: Height: 234mm, Width: 156mm,
Weight: 460g
ISBN: 9781032111292
ISBN 10: 1032111291
Series: Chapman & Hall/CRC Biostatistics Series
Pages: 188
Publication Date: 20 June 2022
Audience: College/higher education , General/trade , Primary , ELT Advanced
Format: Hardback
Publisher's Status: Active

List of Figures..........................................................................................................xi List of Tables......................................................................................................... xiii Preface......................................................................................................................xv Acknowledgements..............................................................................................xix Author.....................................................................................................................xxi List of Acronyms................................................................................................ xxiii 1. Introduction......................................................................................................1 2. All Power Is Conditional Unless It’s Absolute..........................................9 3. Assurance........................................................................................................33 4. Average Power in Non-Normal Settings...................................................59 5. Bayesian Power..............................................................................................75 6. Prior Distributions of Power and Sample Size........................................87 7. Interim Predictions......................................................................................101 8. Case Studies in Simulation........................................................................ 113 9. Decision Criteria in Proof-of-Concept Trials..........................................127 10. Surety and Assurance in Estimation........................................................149 References.............................................................................................................161 Appendix 1 Evaluation of a Double Normal Integral...................................171 Appendix 2 Besag’s Candidate Formula.........................................................173 Index......................................................................................................................175

Andrew P. Grieve is a Statistical Research Fellow in the Centre of Excellence in Statistical Innovation at UCB Pharma. He is a former Chair of PSI (Statisticians in the Pharmaceutical Industry) and a past-President of the Royal Statistical Society. He has over 45 years of experience as a biostatistician working in the pharmaceutical industry and academia and has been active in most areas of pharmaceutical R&D in which statistical methods and statisticians are intimately involved, including drug discovery, pre-clinical toxicology, pharmaceutical development, pharmacokinetics and pharmacodynamics, phase I–IV of clinical development, manufacturing, health economics and clinical operations.

Reviews for Hybrid Frequentist/Bayesian Power and Bayesian Power in Planning Clinical Trials

"""This is a graduate level/practitioner book in ten chapters covering expected, average and predicted power, assurance and Bayesian power followed by a shift in focus to priors, interim predictions and multiple decision criteria. The final chapter looks at surety. The book is logically laid out, with formulae for the normal theory case, some examples, and helpful figures."" ~Maia Lesosky, ISCB Book Reviews"