Title: Medicare, Medicaid, and Managed Care Analysis MMMCA Project Presented by Alexander Cowell, PhD, RTI
1Medicare, Medicaid, and Managed Care Analysis
(MMMCA) ProjectPresented byAlexander Cowell,
PhD, RTI InternationalKay Miller, Thomson
MedstatPresented atJoint Conference on Mental
Health Block Grant and National Conference on
Mental Health StatisticsWashington, DCMay 30,
2006
This work is being conducted under Substance
Abuse and Mental Health Services Administration
(SAMHSA) Task Order 280-2003-00026-0001 by RTI
International, Medstat, New England Research
Institutes, and Brandeis University for the
Center for Mental Health Services (CMHS).
RTI International is a trade name of Research
Triangle Institute
2MMMCA Project Team
- Nainan Thomas, PhD (CMHS)
- Alexander Cowell, PhD Todd Grabill, BA
- Ling Lew, BA Eric Kotecki, BA
- Kay Miller, BA
- Eva Witt, BA
- Mary Jo Larson, PhD
- Christopher Tompkins, PhD
- Jennifer Perloff, PhD
3Project Overview
- Title
- Medicare, Medicaid, and Managed Care Analysis
(MMMCA) Project - Overall goal
- Analyze public and private sector health care
utilization and cost data on claimants with
mental health (MH) and substance abuse (SA)
disorders - Contract dates
- Work ongoing since 1995
- Option period of current contract exercised
- Until September 2007
4Databases
- Three data sources
- Two acquired from Centers for Medicare Medicaid
Services (CMS) - Medicare Standard Analytic Files (1995?2002)
- Medicaid Analytic Files (1994?1999)
- Pre-1999 State Medicaid Research Files (SMRF)
- Post-1999 Medicaid Analytic eXtract (MAX) files
- MarketScan data acquired from Thomson Medstat
(1994?1998, 2001) - Augmented pharmacy data with Red Book starting in
1999 - Use both claims and eligibility information
5Types of Analyses
- Tables
- Prevalence
- Service utilization
- Service payments
- Reports
- Policy issues
- Specific diseases
- Specific comorbidities between conditions
6Deliverables
- Analytic file construction
- Analytic tables
- Analytic reports
- Project Web site
- Technical assistance (TA)
7Features of the Project Web Site
- Emulates Decision Support 2000
- Easy to navigate
- Links to tables, reports, and documentation
- Link to fully Web-enabled TA
- Search function
- Whats New and Contact Us links
8Other Reference Material Available on Project
Web Site
- Defining MH/SA claimants in Medicaid
- Sample methodology
- Frequently asked questions
- Links to other relevant Web sites
9Accessing the Project Web Site
- Go to www.ds2kplus.org
- Click Links on the left-hand side
- Select Medicare, Medicaid, and Private Sector
Analyses - Direct link www.mhsapayments.org
10Online Technical Assistance Training
11Introduction
- Need for TA
- Role of Medicaid data in MH/SA research
- Potential uses of data
- How we meet that need overview of TA
- Audience for TA
- Overview of sessions
- Next steps
12Why the Need for Training
- Medicaid funds are an increasingly large
percentage of state agency revenues - Medicaid accounted for 38 of state MH agency
controlled revenues in 2002 (Source NASMHPD
Research Institute, October 2004) - Medicaid is a rich data source
- Provides data not available within MH/SA agency
data systems - Examples pharmacy costs, detailed information on
outpatient service use, cost of fee-for-service
(FFS) care - MH/SA agencies either do not have access to or do
not fully utilize their states Medicaid data - Our experience can help them use these data
13Potential Uses of Data
- Monitoring performance
- Identifying prevalence of conditions in the
Medicaid population - Tracking utilization and expenditures
- Conducting special analyses
- Reporting
- Integrating with MH/SA agency data
14Overview of TA Training
- Method of administration Web-based
- Includes PowerPoint slides and narration
- Options available
- Audiovisual presentation
- Audiovisual presentation with text
- Download slides
- Download text
- Site now available as a BETA test site
15Audience
- Primary audience MH/SA agency personnel who want
to work with their own states Medicaid data - Secondary audience SAMHSA staff or other
researchers wishing to do similar analysis - Level of expertise required Assumes basic
knowledge of Medicaid and research methods but
will give some background to put topics in
context
16Overview of Sessions
- Session 1 Introduction and Overview
- Session 2 Defining the Research Question and
Developing an Analysis Plan - Session 3 Acquiring Data and Assessing
Quality and Completeness - Session 4 Defining Samples and Designing the
Analytic Database - Session 5 Building Analytic Files and Tables
(Part A, Part B)
17Steps to Policy Research
18Session 1 Introduction and Overview
- Purpose
- Importance of MH/SA research
- Role of Medicaid data in MH/SA research
- Potential uses of data
- Overview of project database
- Description of data
- Hardware and software used
- Types of analyses performed with data
- Overview of research steps
19Example Slide Session 1Potential Uses of Data
- Monitoring performance
- Identifying prevalence of conditions in the
Medicaid population - Tracking utilization and expenditures
- Special analyses
- Reporting
- Integrating with MH/SA agency data
20Session 2 Defining the Research Question and
Developing an Analysis Plan
- Issues faced by state MH agencies
- How Medicaid can help address issues
- Examples include
- Cost containment
- Requests from legislative staff
- Demonstration on how to
- Define the research question
- Develop an analysis plan
21Example Slide Session 2Step 1A Define the
Research Question
Identify the Issue
List the Research Questions
Choose the Primary Research Questions
Organize the Primary Research Questions
22Example Slide Session 2Step 1B Develop an
Analysis Plan
Draft an Outline
Sketch the Background
Determine Which Data to Use
Determine Which Statistical Methods to Use
Complete the Analysis Plan
23Session 3 Acquiring Data and Assessing Quality
and Completeness
- Data acquisition (four steps)
- Understand available Medicaid files
- Create data use agreements
- Request documentation
- Determine which data are needed
- Assessment of data quality and completeness
(three steps) - Conduct initial data runs
- Review critical areas
- Perform a final assessment
24Example Slide Session 3Data Acquisition Step
1 Understand Available Medicaid Files
- Eligibility files
- Claim/encounter-level files
- Fee-for-service (FFS) ? Claim-level files
- Managed care ? Encounter-level files
- (sometimes stored in a separate system)
- Provider-level files
25Example Slide Session 3Data AssessmentStep 2
Review Critical Areas
- Review basic frequencies to uncover data
shortcomings - Examine data element flags that serve as quality
indicators - Check variables critical for analyses (e.g.,
diagnosis codes, procedure codes) - Analyze verification tables that display
information (e.g., number of people, number of
claims, total expenditures) by - Type of service (e.g., inpatient)
- Population (e.g., MH/SA claimants)
- Time period (e.g., monthly)
- Compare with initial statistics or benchmarks
26Session 4 Defining Samples and Designing the
Analytic Database
- Keys to success
- Partnership between analysts and programmers
- Planning
- Defining samples
- Types of samples
- Sample selection criteria
- Key considerations for sample selection
- Sample exclusion criteria
- Defining the analytic database
- Develop statistical analysis and table
specifications - Organize the data
- Retain key elements from original data
- Create additional variables
27Example Slide Session 4Keys to Success
- Partnership between analyst and programmer
- Analyst responsibilities
- Prepare a thorough analysis plan
- Communicate detailed specifications
- Programmer responsibilities
- Identify and communicate problems early
- Prepare documentation of the process,
particularly decisions made
28Example Slide Session 4Sample Selection
Criteria MH/SA Examples
- Diagnosis code
- Major depressive disorder
- Alcoholic psychoses
- Procedure code
- Detoxification
- Psychotherapy
- Service/provider type code
- Inpatient psychiatric facility
- Mental health clinic
- Psychiatrist/psychologist
- Revenue/cost center code
- Psychiatric or detoxification room
- Drug/alcohol rehabilitation
- Prescription drug code
- Antidepressant
29Example Slide Session 4Organize the Data
Person Summary File
- Combines claim and enrollment information for
each person - Demographic characteristics
- Annual and monthly eligibility
- Summary of claim data by type of service
- Sample markers and summary variables (discussed
later) - Minimizes need for repeated processing of large
claim-level files
30Session 5 Building Analytic Files and Tables
- Most detailed session split into two parts
- --------------------------------------------------
---------------------Part A - Building analytic files
- Identify disease-specific samples
- Select final samples
- Build analytic claims-level file
- --------------------------------------------------
---------------------Part B - Build person-summary files
- Key considerations for building analytic files
- Assuring confidentiality
- Preparing data documentation
- Building analytic tables
31Example Slide Session 5Building Analytic Files
Data Processing Flowchart
Medicaid Claims
Medicaid Enrollment
Step 1 Identify Disease-Specific Samples
Step 2 Select Final Samples
Step 3 Build Analytic Claim-Level Files
Step 4 Build Person Summary Files (PSFs)
Claimant ID File
Analytic Claim-Level File
Final ID File
Annual PSF
Historical PSF
32Example Slide Session 5Select Final Samples
Exclude Records as Needed
- Groups not fully represented or not applicable
- Designated in analysis plan
- May include
- Managed care enrollees
- Elderly
- Enrollees with poor data
- Denied claims
- Records outside of time period
33Example Slide Session 5Create Claim-Level
Markers Examples
- MH/SA diagnostic categories
- Primary vs. all diagnosis codes
- Summary vs. detailed categories
- Other disease categories (e.g., asthma, diabetes)
- Service categories
- Ambulatory facility
- Lab/x-ray
- Pharmacy
- Premium payments
- Inpatient
- Inpatient psychiatric
- Other long-term care
- Physician
34Example Slide Session 5Keys to Saving Time and
Resources
- Close collaboration between analysts and
programmers - Well-designed final analytic files
- Carefully planned naming conventions
- Improve efficiency in using data files
- Allow analysts to use computer output and avoid
need to generate tables until results are final - Well-designed Person Summary Files
- Support most analysis
35Discussion Next Steps
- Obtain feedback on current sessions
- Revise/update as needed
- Create new modules
- One possibility analysis of data
- How to produce simple descriptive statistics
- Showing some universally applicable examples
- Other suggestions?
- Market to state agencies how to get the word
out? - Questions/comments?
36Analytic Tables
37Analytic Tables (I)(see online examples)
- Overview tables
- Numbers of claimants
- By demographic and broad diagnostic categories
- Data source-specific tables
- Modality of care
- Diagnosis
- Enrollment status
- Longitudinal
- Chapter in Mental Health, United States, 2004
38Analytic Tables (II) (see online examples)
- Type of service
- MH/SA utilization broken into
- Mental health
- Substance abuse
- Indistinguishable
- Detoxification and rehabilitation
- Detailed psychotropic prescription drugs
- Outpatient emergency room
- Enrollment status
- Managed care enrollment by demographic status
39Table Findings Prescription Drugs (I)
- In Medicaid, prescription drug costs have been
rising - Evidence suggests that these costs are higher for
those with MH/SA conditions
40Table Findings Prescription Drugs (II)
41Table Findings Prescription Drugs (III)
42Table Findings Prescription Drugs (IV)
43Table Findings Prescription Drugs (V)
- Those using antidepressant drugs are more
expensive than those who are not - Reasons are complex and numerous
- Each of the following explain the increase in
part, but none fully explain it - Cost of prescription drugs
- Demographic differences
- Case mix
- Underlying, time-variant characteristics
- Use of other MH/SA services
44Analytic Reports
45Analytic Reports Topics (I)
- General interest mental health and substance
abuse - Dual eligible Medicaid and Medicare beneficiaries
- HIV/AIDS
- Posttraumatic stress disorder
- Substance abuse and major depression
- Childrens mental health services
46Analytic Reports Topics (II)
- Diabetes and depression
- Managed care penetration
- Antidepressants
- Block grants
- Cost offset
- Medicare comorbidities
- MarketScan plans
47Analytic Reports Examples (I)
- General interest mental health and substance
abuse (MH/SA) - Cowell, A.J., T.C. Grabill, E.G. Foley, K.
Miller, M.J. Larson, C. Tompkins, J. Perloff, and
R. Manderscheid. 2005. Trends in Number of and
Payments for Persons with Mental Health and
Substance Abuse Disorders in Public and Private
Sector Health Plans. Draft submitted to appear
in Mental Health, United States, 2004. - Presents trends for 1995 to 1998 on the number of
people with MH/SA disorders, as well as the
utilization and costs associated with treatment.
Three data sources are used that represent the
three largest payers of treatment for MH/SA
disorders Medicare, Medicaid, and the private
sector.
48Analytic Reports Examples (II)
- Dual eligible Medicare and Medicaid beneficiaries
- Larson, M.J., A.J. Cowell, M. Urato, and L.Y.
Lew. 2005. Prescription Drug Expenditures for
Medicaid/Medicare Dual Eligible Beneficiaries
with Mental Health/Substance Abuse Conditions.
Draft report to SAMHSA. - Example to be discussed in detail.
- HIV/AIDS
- Larson, M.J., K. Miller, and J.W. Bray. 2004.
HIV/AIDS ClaimsDiagnosis in Four States Among
Medicaid Enrollees with Mental Health and
Substance Abuse Disorders. Report to SAMHSA. - Concludes that the presence of a co-occurring
substance use diagnosis places those with MH
disorders at particularly high risk for HIV/AIDS
and that MH disorders alone are not associated
with substantial increased risk.
49Analytic Reports Examples (III)
- Posttraumatic Stress Disorder
- Cummings, J., J.W. Bray, W. Schlenger, and R.
Manderscheid. 2004. Diagnosed Prevalence and
Associated Health Care Payments of PTSD in the
Public Sector. Report to SAMHSA. - This study provides baseline estimates of the
diagnosed prevalence and the associated financial
implications of PTSD using 1997 fee-for-service
(FFS) Medicare and Michigan Medicaid claims data. - Cowell, A.J., J.W. Bray, T.C. Grabill, and R.
Manderscheid. 2004. Health Care Costs Associated
with Substance Abuse for Public and Private
Sector Claimants With and Without Major
Depression. Report to SAMHSA. - To date, very little is known about the impact of
SA and major depression on actual payments using
data from more than one payment source. This
study addresses this gap by using a claims
database with samples of three unique populations
that span the U.S. health care system Medicare,
Medicaid, and the private sector.
50Analytic Reports Examples (IV)
- Substance Abuse and Major Depression
- Cowell, A.J., J.W. Bray, T.C. Grabill, and R.
Manderscheid. 2004. Health Care Costs Associated
with Substance Abuse for Public and Private
Sector Claimants With and Without Major
Depression. Report to SAMHSA. - To date, very little is known about the impact of
SA and major depression on actual payments using
data from more than one payment source. This
study addresses this gap by using a claims
database with samples of three unique populations
that span the U.S. health care system Medicare,
Medicaid, and the private sector.
51Analytic Reports Examples (V)
- Childrens Mental Health Services
- Larson, M.J., S. Sharma, K. Miller, and R.
Manderscheid. 2004. Childrens Mental Health
Services in Medicaid. Health Care Financing
Review 26(1)5-22. - This study analyzed annual service use and
payment data for children in racial/ ethnic
subgroups in Medicaid programs of four states and
compared service use of youth treated with MH/SA
conditions to youth without such conditions.
52Analytic Reports Examples (VI)
- Diabetes and Depression
- Finkelstein, E.A., J.W. Bray, H. Chen, M.J.
Larson, K. Miller, C. Tompkins, A. Keme, and R.
Manderscheid. 2003. Prevalence and Costs of
Major Depression among Elderly Claimants with
Diabetes. Diabetes Care 26(2)415-420. - This analysis compares the odds of major
depression among Medicare claimants with and
without diabetes and tests whether annual medical
payments are greater for those with both diabetes
and major depression or for those with diabetes
alone.
53Analytic Reports Examples (VII)
- Managed Care Penetration
- Tompkins, C., and J. Perloff. 2005. The Impact
of Managed Care on Medicaid Fee-For-Service
Expenditures. Draft report to SAMHSA. - Example to be discussed in detail.
- Antidepressants
- Cowell, A.J., J. Cummings, J.W. Bray, and R.
Manderscheid. 2004. Medicaid Costs Associated
with Classes of Antidepressants. Report to
SAMHSA. - Using 1997 Medicaid data for Michigan, New
Jersey, Pennsylvania, and Washington, this study
estimated health care payments associated with
antidepressants. The results provide baseline
estimates of the association between four classes
of antidepressants and annual health care
payments against which more recent data may be
compared.
54Analytic Reports Examples (VIII)
- Block Grants
- Cowell, A.J., and J.W. Bray. 2004. The
Association Between Federal Block Grants and
Individual Mental Health and Substance Abuse
Expenditures. Report to SAMHSA. - Despite block grants being a primary source of
funding to address MH/SA needs, the impact of
such public expenditures and policies on
individual behavior has received little attention
in the literature. To help address this gap in
knowledge, this report uses data from several
sources to assess the impact of the MH and SA
block grants on individual MH and SA
expenditures.
55Analytic Reports Examples (IX)
- Cost Offset
- Bray, J.W., and T.C. Grabill. 2004. The Cost
Offset of MH/SA Treatment in Four Medicaid
States. Report to SAMHSA. - This study analyzes the claims history of
Medicaid recipients with identified MH/SA
disorders and estimates a cost offset of MH/SA
treatment.
56Analytic Reports Examples (X)
- Medicare Comorbidities
- Finkelstein, E.A., J.W. Bray, H. Chen, M.J.
Larson, K. Miller, and C. Tompkins. 2002.
Medicare Cost Implications Associated with
Substance Abuse for Claimants With and Without
Comorbid Mental Health Conditions. Report to
SAMHSA. - This study presents evidence on whether the
increase in costs (to Medicare) associated with
treating a substance abuse condition is less if
the individual is already being treated for a
mental illness. The study also tests whether
general medical costs for claimants with an SA
condition are greater than for those without an
SA condition, and whether the cost implications
are even greater for dual diagnosis claimants.
57Analytic Reports Examples (XI)
- MarketScan Plans
- Tompkins, C., M. Glavin, K. Miller, and T.
Winger. 2001. Does Managed Care Differentially
Affect Services for Behavioral Health? An
Examination of Utilization in Private Health
Plans. Report to SAMHSA. - This study examines the utilization experiences
of individuals enrolled in employer sponsored
private health plans, which are categorized as
fee-for-service (FFS) plans, managed health plans
like preferred provider organizations (PPO), or
capitated health plans like health maintenance
organizations (HMO). The general approach is to
compare various utilization measures across these
three different types of health plans, for
selected patient subgroups.
58Analytic Report Medicaid Prescription Drug
Utilization and Costs for Dual-Eligible
Individuals
59Analytic Report Background on MMA
- Medicare Modernization Act of 2003 (MMA)
- Part D prescription drug benefit
- January 1, 2006, start date
- 43 million beneficiaries are eligible
- CMS oversees implementation of Part D
- Numerous private prescription drug plans
- Vary on formulary restrictions, cost-sharing
measures, utilization review, premiums - CMS guidance on structure of formularies
- Voluntary enrollment and choice of drug plan
60Analytic Report Example Dual-Eligible
Beneficiaries
- Medicare/Medicaid jointly enrolled
- Prescription drug benefit shifting to Part D
- Automatically enrolled and can choose or change
drug plan - States will make clawback payments to federal
government - States are not required but may continue some
pharmacy benefits - 7 million beneficiaries out of 43 million
- Low-income seniors and disabled
- 6 million have full benefits
61Analytic Report Psychiatric Medications
- 41 therapeutic categories and 137 associated
pharmacologic classes on common framework - Model guidelines at least two drugs from each
class should be included on formulary - CMS clarification substantially all
antipsychotic and antidepressant medications
should be included - Benzodiazepines are not covered by Part D
Four other classes are anticonvulsant,
anticancer, immunosuppressant, and HIV/AIDS.
62Analytic Report MMMCA Analyses
- What are the characteristics of Medicaid
beneficiaries to be shifted to Medicare drug
plans? What proportion have MH/SA conditions? - How do the prescription drug expenditures of dual
eligibles with MH/SA conditions compare to all
dual eligibles? - How do the drug expenditures of the MH/SA
beneficiaries shifted to Part D compare to
beneficiaries who will remain under Medicaid
benefits?
63Analytic Report Methods
- 1999 prescription drug data from Michigan, New
Jersey, Pennsylvania, and Washington - FFS recipients in 1999 MAX data
- MMMCA acquired Thomsons Red Book classification
system to assign drugs to therapeutic classes - Identified dual eligible as at least one claim
during the year with a Medicare deductible or
coinsurance paid by Medicaid
64Analytic Report MH/SA vs. Random Samples
- MH/SA sample more likely to be dual eligible in 3
of 4 states (33 vs. 28) - Among dual-eligible enrollees, MH/SA vs. random
sample - More likely to be disabled (62 vs. 47)
- Less likely to be in a nursing home full year
(4.6 vs. 5.3)
65Analytic Report Prescription Drug Expenditures
MH/SA and Random Sample Dual Eligibles
66Analytic Report Psychiatric Drug Expenditures
MH/SA Beneficiaries With and Without Dual
Eligibility
67Analytic Report Other Drug Expenditures MH/SA
Beneficiaries With and Without Dual Eligibility
68Analytic Report Discussion and Next Steps
- There is variation in pharmacy expenditures
within states across subgroups (MH/SA vs. random
dual samples MH/SA dual vs. non-dual) - Movement toward a more uniform prescription
benefit may reduce some of this variation - Subgroups with higher prescription drug
expenditures may be disproportionately affected
by transition to Part D - Preparing two publications (1) MH vs. random
sample dual eligibles, (2) dual vs. non-dual MH/SA
69Analytic Report The Impact of Medicaid Managed
Care on Medicaid Fee-for-Service Expenditures
70Managed Care Penetration
- In the 1990s, a growing proportion of Medicaid
recipients moved from fee-for-service (FFS)
coverage into managed care - Two dominant forms of managed care
- Primary care case management (PCCM)
- Enrollment into separate health plans
71Research Question
- Assess whether average Medicaid FFS expenditure
rates changed between 1993 and 1997 as a result
of increasing managed care penetration - Unsure of answer because of several factors
- Lower rates due to biased risk selection
- Higher rates due to spillover effects
- Tumultuous period for Medicaid
72Methods
- Key measures
- Proportion of enrollees in managed care within
each county for each state (penetration rate) - Total payments per FFS enrollee
- MH/SA payments per FFS enrollee
73Medicaid Enrollment Percentage Change (1993?1997)
Pennsylvania data are for 19941997.
74Managed Care Penetration
Michigan Managed Care Penetration
0.60
0.50
0.40
AFDC
0.30
Percent
DIS
0.20
0.10
0.00
1993
1994
1995
1996
1997
Year
New Jersey Managed Care Penetration
0.90
0.80
0.70
0.60
AFDC
0.50
Percent
0.40
DIS
0.30
0.20
0.10
0.00
1993
1994
1995
1996
1997
Year
75Michigan Trends by County Medicaid Disabled
Michigan Absolute Change in MC and Percentage
Change in FFS (19931997), Medicaid Disabled
76Michigan Trends by County Medicaid AFDC/TANF
Michigan Absolute Change in MC and Percentage
Change in FFS (19931997), AFDC
77Analytic Report Washington Trends by
CountyMedicaid Disabled
Washington Absolute Change in MC and Percentage
Change in FFS (19931997), Medicaid Disabled
78Pennsylvania Trends by CountyMedicaid Disabled
Pennsylvania Absolute Change in MC and Percentage
Change in FFS (19931997), Medicaid Disabled
79Conclusions
- FFS general health care expenditures are either
neutral or increasing with managed care
penetration - But FFS MH/SA expenditures are either neutral or
decreasing with managed care penetration - Managed care experience clearly varies across and
within states - Larger counties have greater managed care
penetration
80Analytic Report Trends in Number of and Payments
for Persons with Mental Health and Substance
Abuse Disorders in Public and Private Sector
Health Plans (draft submitted to appear in
Mental Health, United States, 2004)
81Objective
- Wide-spanning report on trends in utilization and
payments for the 19951998 - Uses all three sources Medicare, 4 Medicaid
states, and MarketScan - Trends presented and discussed
- All sample claimants
- MH/SA claimants
- Claimants with co-occurring MH and SA conditions
- MH/SA claimants with prescription drug medication
82Summary of Findings (I)
- MarketScan and Medicaid decreasing effective
sample size because of increased managed care
penetration - But we know from other work by the project team
that this may not have unduly altered average
payments for MH/SA services - An increasing proportion of claimants in Medicaid
and Medicare had an MH or SA condition
83Summary of Findings (II)
- Proportion of MH/SA claimants with co-occurring
MH and SA disorders has remained stable or
decreased over time - Their average payments have remained stable or
increased over time - Average prescription drug payments for Medicaid
MH/SA claimants have remained consistently higher
than payments for a random sample of all
claimants - The increase in payments for MH/SA claimants in
step with that for a random sample of claimants
84Wrap-Up
- Alexander Cowell, PhDProject Director, RTI