APPROACHES TO MEASURING THE SOURCES AND COSTS OF THEIR IMPROVEMENT
NATIONAL RESEARCH COUNCIL
OF THE NATIONAL ACADEMIES
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ACCOUNTING FOR HEALTH
AND HEALTH CARE
APPROACHES TO MEASURING THE SOURCES AND COSTS
OF THEIR IMPROVEMENT
Panel to Advance a Research Program on the Design of
National Health Accounts
Committee on National Statistics
Division of Behavioral and Social Sciences and Education
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THE NATIONAL ACADEMIES PRESS 500 Fifth Street, N.W. Washington, DC 20001
NOTICE: The project that is the subject of this report was approved by the Governing Board
of the National Research Council, whose members are drawn from the councils of the National
Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The
members of the committee responsible for the report were chosen for their special competences
and with regard for appropriate balance.
This study was supported by contract number N01-OD-4-2139 between the National Academy
of Sciences and the U.S. Department of Health and Human Services. Support for the work of
the Committee on National Statistics is provided by a consortium of federal agencies through a
grant from the National Science Foundation (award number SES-0453930). Any opinions, find-
ings, conclusions, or recommendations expressed in this publication are those of the author(s)
and do not necessarily reflect the view of the organizations or agencies that provided support
for this project.
Library of Congress Cataloging-in-Publication Data
National Research Council (U.S.). Panel to Advance a Research Program on the Design of
National Health Accounts.
Accounting for health and health care : approaches to measuring the sources and costs of
their improvement / Panel to Advance a Research Program on the Design of National Health
Accounts, Committee on National Statistics, Division of Behavioral and Social Sciences and
Education, National Research Council.
p. ; cm.
Includes bibliographical references.
ISBN 978-0-309-15679-0 (pbk.) — ISBN 978-0-309-15680-6 (pdf) 1. Medical care, Cost
of—United States. I. Title.
[DNLM: 1. Accounting—United States. 2. Health Expenditures—United States. 3.
National Health Programs—United States. 4. Public Health—economics—United States. W
74 AA1]
RA410.53.N396 2010
338.4’33621—dc22
2010028929
Additional copies of this report are available from The National Academies Press, 500 Fifth
Street, NW, Lockbox 285, Washington, DC 20055; (800) 624-6242 or (202) 334-3313 (in the
Washington metropolitan area); Internet, http://www.nap.edu.
Copyright 2010 by the National Academy of Sciences. All rights reserved.
Printed in the United States of America
Suggested citation: National Research Council. (2010). Accounting for Health and Health Care:
Approaches to Measuring the Sources and Costs of Their Improvement. Panel to Advance a
Research Program on the Design of National Health Accounts, Committee on National Statis-
tics. Division of Behavioral and Social Sciences and Education. Washington, DC: The National
Academies Press.
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PANEL TO ADVANCE A RESEARCH PROGRAM ON
THE DESIGN OF NATIONAL HEALTH ACCOUNTS
JOSEPH P. NEWHOUSE (Chair), Division of Health Policy Research and
Education, Harvard University
DAVID M. CUTLER, Department of Economics, Harvard University
DENNIS G. FRYBACK, Department of Population Health Sciences, University
of Wisconsin, Madison
ALAN M. GARBER, Department of Veterans Affairs, Palo Alto Health Care
System, and School of Medicine, Stanford University
EMMETT B. KEELER, RAND Graduate School, Santa Monica, CA
ALLISON B. ROSEN, School of Public Health, University of Michigan
JACK E. TRIPLETT, Brookings Institution, Washington, DC
CHRISTOPHER D. MACKIE, Study Director
MICHAEL J. SIRI, Program Associate
v
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COMMITTEE ON NATIONAL STATISTICS
2009-2010
WILLIAM F. EDDY (Chair), Department of Statistics, Carnegie Mellon
University
KATHARINE G. ABRAHAM, Joint Program in Survey Methodology,
University of Maryland
ALICA CARRIQUIRY, Department of Statistics, Iowa State University
WILLIAM DuMOUCHEL, Phase Forward, Inc., Waltham, MA
JOHN HALTIWANGER, Department of Economics, University of Maryland
V. JOSEPH HOTZ, Department of Economics, Duke University
KAREN KAFADAR, Department of Statistics, Indiana University
SALLIE KELLER, Science Technology Policy Institute, Washington, DC
LISA LYNCH, Heller School for Social Policy and Management, Brandeis
University
DOUGLAS MASSEY, Department of Sociology, Princeton University
SALLY C. MORTON, Department of Biostatistics, University of Pittsburgh
JOSEPH P. NEWHOUSE, Division of Health Policy Research and Education,
Harvard University
SAMUEL H. PRESTON, Population Studies Center, University of Pennsylvania
HAL STERN, Department of Statistics, University of California, Irvine
ROGER TOURANGEAU, Joint Program in Survey Methodology, University of
Maryland, and Survey Research Center, University of Michigan
ALAN ZASLAVSKY, Department of Health Care Policy, Harvard Medical
School
CONSTANCE F. CITRO, Director
vi
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Preface
It has become trite to observe that increases in health care costs have become
unsustainable. How best for policy to address these increases, however, depends
in part on the degree to which they reflect changes in the quantity of medical ser-
vices as opposed to increased unit prices of existing services. And an even more
fundamental question is the degree to which the increased spending actually has
purchased improved health.
This report addresses both of these issues. The government agencies respon -
sible for measuring unit prices for medical services have taken steps in recent
years that have greatly improved the accuracy of those measures. Nonetheless,
this report has several recommendations aimed at further improving the price
indexes. Because medical care is such a large part of the economy, inaccurate
medical price indexes can cause significant inaccuracies in overall measures of
inflation.
And accurate measures of inflation matter a great deal for policy: they affect
the tightness of monetary and fiscal policy; they affect government budgets,
because about a third of the federal budget is indexed for inflation; and inaccurate
price indexes by definition lead to inaccurate measures of productivity.
Measuring the price of medical services well is difficult, but the ultimate
question is the degree to which monies spent on medical services, as well as
other policy measures, affect health outcomes. This question is much harder than
measuring prices, but the panel recommends some steps it thinks will improve
the nation’s capacities in this domain.
This report has been reviewed in draft form by individuals chosen for their
diverse perspectives and technical expertise, in accordance with procedures
approved by the Report Review Committee of the National Research Council
vii
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viii PrefACe
(NRC). The purpose of this independent review is to provide candid and critical
comments that will assist the institution in making its published report as sound
as possible and to ensure that the report meets institutional standards for objectiv-
ity, evidence, and responsiveness to the study charge. The review comments and
draft manuscript remain confidential to protect the integrity of the deliberative
process. The panel wishes to thank the following individuals for their review
of this report: Thomas E. Getzen, Fox School of Business, Temple University;
Paul B. Ginsburg, Center for Studying Health System Change, Washington, DC;
Sherry Glied, Department of Health Policy and Management, Mailman School of
Public Health, Columbia University; Dale W. Jorgenson, Department of Econom-
ics, Harvard University; J. Steven Landefeld, Bureau of Economic Analysis, U.S.
Department of Commerce; Mary O’Mahony, National Institute of Economic and
Social Research (UK) and University of Birmingham; and Michael Stoto, Health
Systems Administration and Population Health, Georgetown University School
of Nursing and Health Studies.
Although the reviewers have provided many constructive comments, and
improved the content of the report a great deal, they were not asked to endorse
the conclusions or recommendations; nor did they see the final draft of the report
prior to its release. The review of this report was overseen by Katharine G.
Abraham, Joint Program in Survey Methodology, University of Maryland, and
Charles E. Phelps, university professor and provost emeritus, University of Roch-
ester. Appointed by the NRC’s Report Review Committee, they were responsible
for making certain that an independent examination of this report was carried
out in accordance with institutional procedures and that all review comments
were carefully considered. Responsibility for the final content of this report rests
entirely with the authoring panel and the institution.
Many others generously gave of their time to present at meetings and to
answer questions from panel members and staff, thereby helping the panel to
develop a clearer understanding of key issues relevant to the development of
medical care and health accounting systems. The panel especially thanks the
National Institute on Aging (NIA) Division of Behavioral and Social Research,
which supported the work of the panel as it wrestled over many months with
the difficult issues in conceptualizing health and medical care accounts and
moving toward their development, and the federal statistical agencies, which
allowed the panel access to key personnel with extensive expertise about various
data programs. Richard Suzman and John Haaga of NIA provided insights and
guidance as project initiators. Perspectives from other interested agencies were
expertly supplied by Todd Caldis, Cathy Cowan, Jonathan Cylus, Mark Freeland,
Stephen
Stephen Heffler, Arthur Sensenig, and Andrea Sisko of the Centers for Medicare
of
& Medicaid Services (U.S. Department of Health and Human Services); by Ralph alph
Bradley, John Greenlees, Michael Horrigan, John Lucier, Robert McClelland,
Bonnie Murphy, and Roslyn Swick of the Bureau of Labor Statistics (U.S.
Department of Labor); by Ana Aizcorbe, Dennis Fixler, and J. Steven Landefeld
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ix
PrefACe
of the Bureau of Economic Analysis (U.S. Department of Commerce); by Jessica
Banthin, Yen-Pin Chiang, Steven Cohen, and William Lawrence of the Agency
for Healthcare Research and Quality (U.S. Department of Health and Human Ser-
vices); by Linda Bilheimer and Christine Cox of the National Center for Health
Statistics (Centers for Disease Control and Prevention, U.S. Department of Health
and Human Services); by Theodore Stefos of the U.S. Department of Veterans
Affairs; and by Anne Hall of the Board of Governors of the Federal Reserve.
The panel also learned a great deal from hearing about health data efforts by
government agencies and researchers abroad. For their participation and willing -
ness to travel great distances to do so, the panel thanks John Goss, Australian
Institute of Health and Welfare; Sandra Hopkins, Organisation for Economic Co-
operation and Development Health Division; Mary O’Mahony, National Institute
of Economic and Social Research (UK) and University of Birmingham; and
Michael Wolfson, Statistics Canada.
On the home front, the panel could not have conducted its work without an
excellent and well managed NRC staff. In that regard, it appreciates the support of
Constance Citro, director of the Committee on National Statistics; Michael Siri,
program associate; and Christopher Mackie, the panel’s study director.
Most importantly, I thank the members of the panel for their hard work. This
report reflects the collective expertise and commitment of the individual members
of the panel. All participated in the panel’s many meetings and in drafting mate -
rial for discussion and, ultimately, for the report itself. Each member brought
a critical perspective, and our meetings provided many opportunities for panel
members to learn from one another.
Joseph P. Newhouse, Chair
Panel to Advance a Research Program on
the Design of National Health Accounts
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Contents
ACRONYMS AND ABBREVIATIONS xv
ABSTRACT xx
SUMMARY 1
1 HEALTH DATA AND HEALTH POLICY 17
1.1. The Purpose and Value of an Expanded System of National
Health Accounts, 17
1.2. Report Audience, Report Structure, 23
2 MEDICAL CARE ACCOUNTS AND HEALTH ACCOUNTS:
STRUCTURE AND DATA 27
2.1. Links to Economic Accounts, 27
2.2. Medical Care and Health Accounts Contrasted, 28
2.3. Structure and Data for a Medical Care Account, 36
2.4. Inputs to the Medical Care Account, 40
2.5. Measuring Output in the Medical Care Account, 52
Annex: Product Detail for Electromedical Equipment Data, 63
3 ALLOCATING MEDICAL EXPENDITURES:
A TREATMENT-OF-DISEASE ORGANIZING FRAMEWORK 71
3.1. Motivation for Disease-Based Accounts, 71
3.2. Cost-of-Illness Estimation, 73
xi
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xii CONTENTS
3.3. onceptual Framework for Disease-Based National Health
C
Accounts, 77
3.4. Reconciliation of Microdata to NHEA, 78
3.5. Disease Classification Schema, 81
3.6. lternative Approaches to Allocating Medical Care
A
Expenditures, 84
4 MEASURING PRICES AND QUANTITIES OF MEDICAL CARE:
IMPROVING MEDICAL CARE PRICE INDEXES 95
4.1. lternative Estimations of Quantity Growth in Medical Care
A
Services: The Role of Price and Quantity Indexes, 95
4.2. rice Indexes for Medical Care: The Producer Price Indexes
P
and Their Use in BEA Accounts, 100
4.3. hat Is Needed in a Price Index for Medical Care?: Evaluation
W
of the PPI, 104
4.4. hen Treatments Move Across Industries or Across
W
Establishments, 109
4.5. nit Values Compared with Specification Pricing, 113
U
4.6. he Way Forward: Strategies for Improving Medical Care
T
Deflators, 116
5 DEFINING AND MEASURING POPULATION HEALTH 119
5.1. Introduction, 119
5.2. ALY and Quality-Adjusted Life Expectancy as a Summary
Q
Measure of Current Health, 127
5.3. s Measuring Current Health by QALE Enough?: Adding Risk
I
Factors to the Data Set, 136
5.4. ow Can HRQoL and Risk Factor Data Be Collected for a
H
National Account?, 139
5.5. A Note on Valuing Health Increments, 140
6 LINKING POPULATION HEALTH TO THE ARRAY OF
HEALTH INPUTS 143
6.1. Attribution of Health Effects to Inputs, 144
6.2. Medical Care Expenditures and Health, 146
6.3. Nonmedical and Nonmarket Inputs to Health, 149
6.4. Disease Modeling, 154
6.5. ypes of Health Data and Statistics and Challenges to Their
T
Improvement, 163
6.6. Organizing the Data Infrastructure, 175
BIBLIOGRAPHY 187
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xiii
CONTeNTS
APPENDIXES
A The Potential Role of Various Data Sources in a National Health
Account 205
B Biographical Sketches of Panel Members and Staff 211
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Acronyms and Abbreviations
ACES Annual Capital Expenditures Survey
ACG adjusted clinical groups
ACS American Community Survey
ADL activities of daily living
AHIP America’s Health Insurance Plans
AHRQ Agency for Healthcare Research and Quality
APG Ambulatory Patient Groups
ASM Annual Surveys of Manufactures
ATUS American Time Use Survey
BEA Bureau of Economic Analysis
BLS Bureau of Labor Statistics
BMI body mass index
BRFSS Behavioral Risk Factor Surveillance System
CAT computerized adaptive test
CCS Clinical Classification Software
CDC Centers for Disease Control and Prevention
CDM chronic disease model
CES Current Employment Survey
CIHI Canadian Institute for Health Information
CIR Current Industrial Reports
CMS Centers for Medicare & Medicaid Services
CNSTAT Committee on National Statistics
COI cost of illness
xv
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xvi ACrONYMS AND ABBreVIATIONS
CPI Consumer Price Index
CPS Current Population Survey
CRG clinical risk grouping
CRIW Conference on Research in Income and Wealth
DALY disability-adjusted life year
DCG diagnostic cost groups
DoD U.S. Department of Defense
DRG diagnostic-related groups system
EKG electrocardiograph
EMG electromyography
EPA U.S. Environmental Protection Agency
ER emergency room
ETG episode treatment groups
EU European Union
FRB Federal Reserve Board
GDP gross domestic product
HCPCS Healthcare Common Procedure Coding System
HCUP Healthcare Cost and Utilization Project
HHS U.S. Department of Health and Human Services
HIPAA Health Insurance Portability and Accountability Act
HIV human immunodeficiency virus
HIV/AIDS human immunodeficiency virus/acquired immunodeficiency
syndrome
HOS Medicare Health Outcomes Survey
HPV human papillomavirus
HRQoL health-related quality of life
HRS Health and Retirement Study
HUI2 Health Utilities Index Mark 2
HUI3 Health Utilities Index Mark 3
IADL instrumental activities of daily living
ICD-9 International Statistical Classification of Diseases and Related
Health Problems, ninth revision
ICD-9-CM International Classification of Diseases, ninth revision,
Clinical Modification
ICD-10 International Statistical Classification of Diseases and Related
Health Problems, tenth revision
ICT information and communications technology
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xvii
ACrONYMS AND ABBreVIATIONS
IOM Institute of Medicine
IPI International Price Index
IRS U.S. Internal Revenue Service
ISR University of Michigan Institute for Social Research
IT information technology
JCUSH Joint Canada/United States Survey of Health
KLEMS inputs for medical services that go into a medical care
account: capital services (K); labor services—the vector
of all labor inputs, from surgeons to janitors (L); energy
(E); intermediate or purchased materials, which, in medical
care–providing industries, includes pharmaceuticals used in
hospitals and clinics (M); and purchased services (S)
LDC less-developed countries
LE life expectancy
LP labor productivity growth
MC marginal cost
MCBS Medicare Current Beneficiary Survey
MDC major diagnostic category
MedPAC Medicare Payment Advisory Commission
MEG medstat episode groups
MEPS Medical Expenditure Panel Survey
MFP multifactor productivity
MI myocardial infarction
MRI magnetic resonance imaging
NAICS North American Industry Classification System
NAPCS North American Product Classification System
NBER National Bureau of Economic Research
NCHS National Center for Health Statistics
NCS National Comorbidity Survey
NCS-R National Comorbidity Survey-Replication
NCVHS National Committee on Vital and Health Statistics
NDC National Drug Code
NDI National Death Index
NEFS National Epidemiologic Followup Study
NHA National Health Account
NHANES National Health and Nutrition Examination Survey
NHCS National Health Care Survey
NHEAs National Health Expenditure Accounts
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xviii ACrONYMS AND ABBreVIATIONS
NHHCS National Home and Hospice Care Survey
NHIS National Health Interview Survey
NHMS National Health Measurement Study
NHSDA National Household Survey on Drug Abuse
NIA National Institute on Aging
NIESR National Institute of Economic and Social Research (UK)
NIH National Institutes of Health
NIPAs National Income and Product Accounts
NIS Nationwide Inpatient Sample
NMES National Medical Expenditures Survey
NNHS National Nursing Home Survey
NOMESCO Nordic Medico-Statistical Committee
NRC National Research Council
NSAS National Survey of Ambulatory Surgery
NSF National Science Foundation
OECD Organisation for Economic Co-operation and Development
OTC over the counter
PCE personal consumption expenditures
PHC personal health care
PPI Producer Price Index
PPMS Provider Performance Measurement System
PROMIS Patient-Reported Outcomes Measurement and Information
System
QALE quality-adjusted life expectancy
QALY quality-adjusted life year
QOL quality of life
QWB-SA Quality of Well-Being Scale, self administered
R&D research and development
RRU relative resource use
SAMHSA Substance Abuse and Mental Health Services Administration
SEER Surveillance, Epidemiology, and End Results Program
SEER-CMHSF Surveillance, Epidemiology, and End Results-Continuous
Medicare History Sample File
SES socioeconomic status
SHA system of health accounts
SID State Inpatient Database
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xix
ACrONYMS AND ABBreVIATIONS
TFP total factor productivity
USVEQ U.S. Valuation of the EQ-5D
VA U.S. Department of Veterans Affairs
VAS visual analog scale
VBID value-based insurance design
WHO World Health Organization
WHS World Health Survey
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Abstract
In order for policy makers to pursue informed actions to enhance efficiency
of the nation’s approach to medical and health care—whether through carefully
targeted cost reductions or improved performance—a redesigned data system
for tracking resource productivity is needed. This report lays out strategies for
advancing this objective. Specifically, the panel recommends that work proceed
on two projects that are distinct but complementary in nature: the first involves
reformulating the economic accounting of inputs and outputs for the medical care
sector; the second involves developing a data system that coordinates population
health statistics with information on the determinants of health. Though the scope
of activities required for each of these two projects is different, both economic
problems involve identifying units of measurement for which meaningful prices
and quantities can be attached so that returns to investments in health can be
estimated, tracked over time as the quality of care and the composition of the
population change, and compared under alternative planning scenarios.
Inputs to medical care include capital, labor, energy and materials, research
and development, and the like. The report gives considerable attention to how
expenditures on these inputs are to be allocated in an accounting structure, with
the panel recommending that a substantial portion can be framed in terms of
treatments for diseases and other well-defined conditions. In principle, this struc -
ture allows the value of the output of medical care to consumers (patients) to be
adjusted to reflect changing quality of outcomes.
Inputs to health, the output of a broader accounting concept, include
medical care but also many other factors. An essential component of this kind
of account—and, more immediately, a data system that could be used in its
development—involves selecting a summary measure of population health, and
xx
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xxi
ABSTrACT
the report assesses the options. Though it involves very long-term commitments,
efficient management of health care resources requires developing a more com -
plete understanding than currently exists of the links between population health
and the array of health inputs. Thus, the report discusses data needs and issues
that are confronted in research seeking to attribute health effects to both medical
and nonmedical (as well as market and nonmarket) inputs to health.
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