Veterans Health Administration Data

Registry

Gregg Seppala

Data Administrator

Veterans Health Administration

Gregg.Seppala@med.va.gov

Presentation for the

ISO/IEC Open Forum on Metadata Registries

Santa Fe, NM

January 18, 2000

ISO Open Forum 01/18/00 VHA Metadata Registry 2

VHA profile: population 25.6 million veterans Used by more than 40% of service-

connected and low income veterans

ISO Open Forum 01/18/00 VHA Metadata Registry 3

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)