Sample Sizes for Clinical Trials

Steven A. Julious

August 26, 2009 by Chapman and Hall/CRC
Reference - 328 Pages - 60 B/W Illustrations
ISBN 9781584887393 - CAT# C7397

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  • Covers the most common types of clinical trials across all phases
  • Discusses how assumptions made in a sample size calculation can impact the calculation
  • Provides calculations for many of the trials and offers hints and tips on how to optimize the calculations
  • Illustrates the steps involved in determining sample size, from defining the trial objective to selecting an appropriate endpoint
  • Includes worked examples and problems based on real-world scenarios


Drawing on various real-world applications, Sample Sizes for Clinical Trials takes readers through the process of calculating sample sizes for many types of clinical trials. It provides descriptions of the calculations with a practical emphasis.

Focusing on normal, binary, ordinal, and survival data, the book explores a range of trials, including superiority, equivalence, non-inferiority, bioequivalence, and precision for both parallel group and crossover designs. The author discusses how trial objectives impact the study design with respect to the derivation of formulae for sample size calculations. He uses real-life studies throughout to show how the concepts and calculations can be employed.

This work underscores the importance of sample size calculation in the design of a clinical trial. With useful calculation tables throughout, it enables readers to quickly find an appropriate formula, formula application, and associated worked example.

Watch the author speak about this book at JSM 2012 in San Diego.


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