veterans health administration data registry gregg seppala data administrator veterans health...
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Veterans Health Administration Data
Registry
Gregg Seppala
Data Administrator
Veterans Health Administration
Presentation for the
ISO/IEC Open Forum on Metadata Registries
Santa Fe, NM
January 18, 2000
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VHA profile: population 25.6 million veterans Used by more than 40% of service-
connected and low income veterans
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VHA profile: resources $18.3 billion budget 215,468 employees
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VHA profile: facilities
Health care facilities in 50 states, District of Columbia, and Puerto Rico 172 medical centers 551 ambulatory care & community-
based outpatient clinics 131 nursing homes 40 domiciliaries 73 comprehensive home care programs
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VHA profile: services provided
VHA provides health care services to 3.6 million individuals in a year 750,000 hospital patients 106,000 nursing home patients 25,000 domiciliary patients 35.8 million outpatient clinic visits
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VHA profile: I.T. environment 142 VISTA implementations 92 national databases 22 Veterans Integrated Service
Networks 5 “value added” data provider
organizations Data holdings stretch back 20+
years
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VHA CDR – origins December 1997 presentation on
Australian Health Information Knowledgebase at a Data Registry Coalition meeting
October 1998 Corporate Data Registry included in the VHA Information Technology Architecture
March 2000 VHA CDR begins operation
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VHA CDR – goals Reduce amount of unnecessary
duplicate data in corporate databases Increase awareness and understanding
of inventory of data kept in corporate databases
Reduce time to access and identify information about data in corporate databases
Provide a central data element resource for software development projects
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VHA CDR – user types Data users Application developers Standards developers CDR administrators
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VHA CDR – data classesIdentifying and Definitional Attributes
Basic attributes of data elements from ISO/IEC 11179 part 3 + sensitivity level
Relational and Representational Attributes
Basic attributes of data elements from ISO/IEC 11179 part 3 + business rules
Data Steward Attributes Data registry administrative attributes - ISO/IEC 11179 part 6
Technical Development Attributes
Physical characteristics of data instance – mapping extension
Operational System Attributes Source operational system information – mapping extension
Administrative Attributes Data registry administrative attributes - ISO/IEC 11179 part 6
Populating the data registry
CDR Administrators
Business Analyst/SME
Application Developers
Data Standard Developers
ProductionVersion
Production CDR
Metadata Collection CDR
CandidateData Standards
Data Standards Process
JAD Process
Req
uest
App
rova
l
Logical Data Model
Extracts fromData Dictionaries
MissingMetadata
Information
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Data standardization process
SubmittingOrganization
ResponsibleOrganization
ApprovalAuthority
DraftCandidate
Standard
Corporate Data Registry
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CDR menu – data element Query metadata
Keyword System Responsible authority Data element name
Ad hoc reports Download records
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CDR menu – maintenance Add metadata
Automated population via extracts from data dictionaries and data models
Manual entry via JAD session Update metadata Version metadata Link standardized data with aliases Gather user feedback
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CDR menu – JAD Reference
information stored in registry
Reconcile on-line discrepancies and vote
Document results in centralized place, reuse
JAD Session Leader Updates Information
Participant
Participant
Participant Participant
Participant
Participant
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CDR menu – standardization Responsible Organization
Pick list of data elements with status = “draft”
Edit screen to verify/update data and change status to “candidate”
Send for approval Approval Authority
Pick list of of data elements with status = “candidate”
Approve or reject
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VHA CDR – current status Version 1.0 begins operation in Q1
2000 48 metadata attributes 210 standard data elements Estimated 3000 to 5000 data
elements from operational systems (aliases)