Veterans Health Administration Data Registry Gregg Seppala Presentation

Veterans Health Administration Data Registry Gregg Seppala Presentation for the Data Administrator ISO/IEC Open Forum on Metadata Registries Veterans Health Administration Santa Fe, NM Gregg. Seppala@med. va. gov January 18, 2000 ISO Open Forum 01/18/00 VHA Metadata Registry 1

VHA profile: population n n 25. 6 million veterans Used by more than 40% of serviceconnected and low income veterans ISO Open Forum 01/18/00 VHA Metadata Registry 2

VHA profile: resources n n $18. 3 billion budget 215, 468 employees ISO Open Forum 01/18/00 VHA Metadata Registry 3

VHA profile: facilities Health care facilities in 50 states, District of Columbia, and Puerto Rico n n n 172 medical centers 551 ambulatory care & community-based outpatient clinics 131 nursing homes 40 domiciliaries 73 comprehensive home care programs ISO Open Forum 01/18/00 VHA Metadata Registry 4

VHA profile: services provided VHA provides health care services to 3. 6 million individuals in a year n n 750, 000 hospital patients 106, 000 nursing home patients 25, 000 domiciliary patients 35. 8 million outpatient clinic visits ISO Open Forum 01/18/00 VHA Metadata Registry 5

VHA profile: I. T. environment n n n 142 VISTA implementations 92 national databases 22 Veterans Integrated Service Networks 5 “value added” data provider organizations Data holdings stretch back 20+ years ISO Open Forum 01/18/00 VHA Metadata Registry 6

VHA CDR – origins n December 1997 presentation on Australian Health Information Knowledgebase at a Data Registry Coalition meeting n October 1998 Corporate Data Registry included in the VHA Information Technology Architecture n March 2000 VHA CDR begins operation ISO Open Forum 01/18/00 VHA Metadata Registry 7

VHA CDR – goals n n 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 ISO Open Forum 01/18/00 VHA Metadata Registry 8

VHA CDR – user types n n Data users Application developers Standards developers CDR administrators ISO Open Forum 01/18/00 VHA Metadata Registry 9

VHA CDR – data classes Identifying 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 ISO Open Forum 01/18/00 VHA Metadata Registry 10

Populating the data registry Candidate Data Standards Business Analyst/SME Logical Data Model Application Developers Request Data Standard Developers Approval Production CDR Metadata Collection CDR Production Version CDR Administrators In Extracts from Data Dictionaries fo rm M M issi eta ng da ta ati on JAD Process Data Standards Process ISO Open Forum 01/18/00 VHA Metadata Registry 11

Data standardization process Responsible Organization Draft Submitting Organization Candidate Approval Authority Standard Corporate Data Registry ISO Open Forum 01/18/00 VHA Metadata Registry 12

CDR menu – data element n Query metadata n n n Keyword System Responsible authority Data element name Ad hoc reports Download records ISO Open Forum 01/18/00 VHA Metadata Registry 13

CDR menu – maintenance n Add metadata n n n 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 ISO Open Forum 01/18/00 VHA Metadata Registry 14

CDR menu – JAD n n n Reference information stored in registry Reconcile on-line discrepancies and vote Document results in centralized place, reuse ISO Open Forum 01/18/00 Participant VHA Metadata Registry Participant JAD Session Leader Updates Information 15

CDR menu – standardization n Responsible Organization n n Pick list of data elements with status = “draft” Edit screen to verify/update data and change status to “candidate” Send for approval Authority n n Pick list of of data elements with status = “candidate” Approve or reject ISO Open Forum 01/18/00 VHA Metadata Registry 16

VHA CDR – current status n n Version 1. 0 begins operation in Q 1 2000 48 metadata attributes 210 standard data elements Estimated 3000 to 5000 data elements from operational systems (aliases) ISO Open Forum 01/18/00 VHA Metadata Registry 17