PHARMACOECONOMICS From Theory to Practice Drug Discovery Series Series Editor Andrew A. Carmen illumina, Inc. San Diego, California 1. Virtual Screening in Drug Discovery, edited by Juan Alvarez and Brian Shoichet 2. Industrialization of Drug Discovery: From Target Selection Through Lead Optimization, edited by Jeffrey S. Handen, Ph.D. 3. Phage Display in Biotechnology and Drug Discovery, edited by Sachdev S. Sidhu 4. G Protein-Coupled Receptors in Drug Discovery, edited by Kenneth H. Lundstrom and Mark L. Chiu 5. Handbook of Assay Development in Drug Discovery, edited by Lisa K. Minor 6. In Silico Technologies in Drug Target Identification and Validation, edited by Darryl León and Scott Markel 7. Biochips as Pathways to Drug Discovery, edited by Andrew Carmen and Gary Hardiman 8. Functional Protein Microarrays in Drug Discovery, edited by Paul F. Predki 9. Functional Informatics in Drug Discovery, edited by Sergey Ilyin 10. Methods in Microarray Normalization, edited by Phillip Stafford 11. Microarray Innovations: Technology and Experimentation, edited by Gary Hardiman 12. Protein Discovery Technologies, edited by Renata Pasqualini and Wadih Arap 13. Pharmacoeconomics: From Theory to Practice, edited by Renée J. G. Arnold PHARMACOECONOMICS From Theory to Practice Edited by RENÉE J. G. ARNOLD Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business Chapter 8 is copyright 2010 by Dr. Lieven Annemans. CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2010 by Taylor and Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Printed in the United States of America on acid-free paper 10 9 8 7 6 5 4 3 2 1 International Standard Book Number: 978-1-4200-8422-1 (Hardback) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmit- ted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright. com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of users. For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. Library of Congress Cataloging‑in‑Publication Data Pharmacoeconomics : from theory to practice / editor, Renee J.G. Arnold. p. ; cm. -- (Drug discovery series ; 13) Includes bibliographical references and index. ISBN 978-1-4200-8422-1 (hardcover : alk. paper) 1. Drugs--Cost effectiveness. 2. Pharmacy--Economic aspects. 3. Decision making. I. Arnold, Renee J. G. II. Title. III. Series: Drug discovery series ; 13. [DNLM: 1. Economics, Pharmaceutical. 2. Costs and Cost Analysis. 3. Decision Making. 4. Outcome Assessment (Health Care)--economics. QV 736 P5374 2010] RS100.P433 2010 338.4’76151--dc22 2009032763 Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com Contents Preface......................................................................................................................vii Acknowledgments .....................................................................................................ix Contributors ..............................................................................................................xi Chapter 1 Introduction to Pharmacoeconomics ...................................................1 William F. McGhan Chapter 2 Decision Modeling Techniques ..........................................................17 Mark S. Roberts and Kenneth J. Smith Chapter 3 Cost of Illness .....................................................................................37 Renée J.G. Arnold Chapter 4 Markov Modeling in Decision Analysis ............................................47 J. Robert Beck Chapter 5 Retrospective Database Analysis .......................................................59 Renée J.G. Arnold and Sanjeev Balu Chapter 6 What Is Cost-Minimization Analysis? ...............................................83 Alan Haycox Chapter 7 Cost-Effectiveness Analysis ...............................................................95 Kenneth J. Smith and Mark S. Roberts Chapter 8 Budget Impact Analysis ...................................................................109 Lieven Annemans Chapter 9 Cost-Utility Analysis: A Case Study of a Quadrivalent Human Papillomavirus Vaccine ....................................................................119 Erik J. Dasbach, Ralph P. Insinga, and Elamin H. Elbasha v vi Contents Chapter 10 Some Problems/Assumptions in Pharmacoeconomic Analysis .......133 Stuart Birks Chapter 11 Patient-Reported Outcome Measures ...............................................149 Dianne Bryant, Gordon Guyatt, and Renée J.G. Arnold Chapter 12 Sensitivity Analysis ..........................................................................163 Maarten J. Postma Chapter 13 Use of Pharmacoeconomics in Drug Reimbursement in Australia, Canada, and the United Kingdom: What Can We Learn from International Experience? .............................................175 Michael Drummond and Corinna Sorenson Chapter 14 Pharmacoeconomics in Disease Management: Practical Applications and Persistent Challenges ...........................................197 Ryung Suh and David Atkins Chapter 15 Computer-Aided Decision Making from Drug Discovery to Pharmacoeconomics ........................................................................209 Sean Ekins and Renée J.G. Arnold Chapter 16 Speculations on the Future Challenges and Value of Pharmacoeconomics ........................................................................227 J. Jaime Caro, Denis Getsios, and Rachael L. Fleurence Index ......................................................................................................................237 Preface The genesis of this book was the pharmacoeconomics research and other outcomes projects my colleagues and I have completed for our pharmaceutical company and government clients over many years. The chapter ideas came specifically from the Introduction to Pharmacoeconomics course I developed and currently teach for the Mount Sinai School of Medicine Master of Public Health program. I have collabo- rated extensively with many of the colleagues who have written chapters for this book, and I am truly grateful to these extremely busy people, who have contributed their valuable time and collective wisdom to make it useful and practical. Some of the views expressed herein may be controversial but, after all, experts may still dis- agree and some disagreement is healthy if it leads to useful dialogue and changes in practice that will benefit populations and individual patients. This book is meant to provide an introduction to the major concepts and princi- ples of pharmacoeconomics, with particular emphasis on modeling, methodologies, and data sources and application to real world dilemmas. Readers will learn about the international use of pharmacoeconomics in drug regulation, drug approval, and pricing. They are also given examples of pharmacoeconomic models used to support these purposes in government, the pharmaceutical industry, and healthcare settings (e.g., pharmacoeconomic analyses of a public health vaccination program). In par- ticular, the example of collaboration among members of the pharmaceutical indus- try, academia, and government in the development of the recently approved human papillomavirus vaccine is used as a running theme through the majority of the chap- ters to demonstrate the full range of ethical and moral issues, as well as overall public health and commercial concerns that are often involved in decisions entailing pharmacoeconomic issues. Lest readers think these issues esoteric or untimely, they are referred to a recent Institute of Medicine Report (Institute of Medicine of the National Academies, Roundtable on evidence-based medicine: Learning healthcare system concepts, 2008) that stated that the best value is derived by “applying the evidence we have about the medical care that is most effective” and also by improv- ing our “timely generation of evidence on the relative effectiveness, efficiency, and safety of available and emerging interventions.” These principles are being embod- ied, for example, in the much-discussed potential U.S. Institute for Comparative Effectiveness Research (interestingly, the same acronym as an oft-used concept in pharmacoeconomics, that of the incremental cost-effectiveness ratio, or ICER) and in guidances rendered by the U.K.’s National Institute for Health and Clinical Excellence (NICE). Pharmacogenomics, or the use of personalized medicine, will be combined with cost-effectiveness analyses to inform and improve healthcare decision-making. For example, a recent theoretical Markov model showed pharma- cogenomic-guided dosing for anticoagulation with warfarin to not be cost effective in patients with nonvalvular atrial fibrillation. Interestingly, another recently pub- lished algorithm using logistic regression from international retrospective databases showed that incorporating pharmacogenetic information was more likely to result in vii viii Preface a therapeutic international normalized ratio (INR), the major method of determining anticoagulation, than use of clinical data alone. However, the data used to inform the Markov model were published studies that did not include the latter study, and the algorithm did not indicate the clinical diagnoses, nor the clinical outcomes, of the patients who were more or less likely to be within a therapeutic INR. Thus, improved and cost-effective decisions, using the best available evidence-based medicine, will require that both clinical and economic expertise, as epitomized in this book, be used. Acknowledgments I gratefully acknowledge my colleague and friend, Dr. Sean Ekins, who prompted me to write this book and also contributed a chapter. In addition, the expert assis- tance of Kirsten Groesser, a graduate student in the Mount Sinai School of Medicine Master of Public Health program, was particularly appreciated. ix