Bretz / Hothorn / Westfall Multiple Comparisons Using R

1. Auflage 2010
ISBN: 978-1-4200-1090-9
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 205 Seiten

Adopting a unifying theme based on maximum statistics, Multiple Comparisons Using R describes the common underlying theory of multiple comparison procedures through numerous examples. It also presents a detailed description of available software implementations in R. The R packages and source code for the analyses are available at http://CRAN.R-project.org

After giving examples of multiplicity problems, the book covers general concepts and basic multiple comparisons procedures, including the Bonferroni method and Simes’ test. It then shows how to perform parametric multiple comparisons in standard linear models and general parametric models. It also introduces the multcomp package in R, which offers a convenient interface to perform multiple comparisons in a general context. Following this theoretical framework, the book explores applications involving the Dunnett test, Tukey’s all pairwise comparisons, and general multiple contrast tests for standard regression models, mixed-effects models, and parametric survival models. The last chapter reviews other multiple comparison procedures, such as resampling-based procedures, methods for group sequential or adaptive designs, and the combination of multiple comparison procedures with modeling techniques.

Controlling multiplicity in experiments ensures better decision making and safeguards against false claims. A self-contained introduction to multiple comparison procedures, this book offers strategies for constructing the procedures and illustrates the framework for multiple hypotheses testing in general parametric models. It is suitable for readers with R experience but limited knowledge of multiple comparison procedures and vice versa.
See Dr. Bretz discuss the book.

Zielgruppe

Researchers and graduate and advanced undergraduate students in statistics; applied scientists in biology, medicine, pharmaceutical industry, molecular biology, and agriculture.

Autoren/Hrsg.

Bretz, Frank

Hothorn, Torsten

Westfall, Peter

Fachgebiete

• Naturwissenschaften Biowissenschaften Biowissenschaften
• Mathematik | Informatik Mathematik Stochastik Mathematische Statistik
• Mathematik | Informatik Mathematik Stochastik Wahrscheinlichkeitsrechnung

Inhaltsverzeichnis

Introduction

General Concepts
Error rates and general concepts
Construction methods
Methods based on Bonferroni’s inequality
Methods based on Simes’ inequality

Multiple Comparisons in Parametric Models
General linear models
Extensions to general parametric models
The multcomp package

Applications
Multiple comparisons with a control
All pairwise comparisons
Dose response analyses
Variable selection in regression models
Simultaneous confidence bands
Multiple comparisons under heteroscedasticity
Multiple comparisons in logistic regression models
Multiple comparisons in survival models
Multiple comparisons in mixed-effects models

Further Topics
Resampling-based multiple comparison procedures
Group sequential and adaptive designs
Combining multiple comparisons with modeling

Bibliography
Index

Über Autor(innen)

Frank Bretz is Global Head of the Statistical Methodology group at Novartis Pharma AG in Basel, Switzerland. He is also an adjunct professor at the Hannover Medical School in Germany.
Torsten Hothorn is a professor of biostatistics in the Faculty of Mathematics, Computer Science and Statistics at Ludwig-Maximilians-Universität München in Germany.
Peter Westfall is James and Marguerite Niver and Paul Whitfield Horn Professor of Statistics and associate director of the Center for Advanced Analytics and Business Intelligence at Texas Tech University in Lubbock, USA.