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Towards International Alignment
Introduction to the Canadian Health Data Model
and potential contribution to HL7 Harmonization processes
•RIM Basics
•RIM Privileges
•Harmonization Process
•Facilitator Responsibilities
•International Committee Responsibilities
•RIM Influence Strategies
•Model Alignment
•Common Concept Model
•Canadian Health Data Model
Reference InformationModel (RIM)
Technical CommitteeA
Technical CommitteeB
DomainInformationModel
2.
PinkSteward
BlueSteward
RIM Basics
International CommitteeRIM Privileges
•Stewardship
•Submit Changes
•Attend Harmonization
•Vote on Changes
(see M&M Minutes Sept. ‘98)
Harmonization Process
1. Document Proposed Changes
2. Discuss with Steward(s)
3. Post Changes on Website
4. Present Changes in Meeting
5. Vote on Changes
6. Refresh RIM with HL7 tooling
7. Technical Corrections
8 Post new RIM Version on Website
Facilitator Responsibilities
•Coordinate Documentation and Justification
•Facilitate Discussions with Stewards
•Format RIM Change Proposals
•Submit for Posting
•Facilitate Pre-Meeting Discussions
•Represent Proposal during Harmonization
•Assist Stewards with Technical QA
International Committee Responsibilities for RIM
•Determine Information Needs
•Prioritize Information Needs
•Determine Influence Strategy
•Provide Domain Expertise for Content &
Justification
•Recommend Specific RIM Changes
•Follow Version 3 Methodology for New
Messages
RIM Influence Strategies
•Join a HL7 TC and influence changes by persuading the collective members of the TC and being present for all decisions
•Propose specific RIM changes to the harmonization process
•Align external models to the RIM for general information and raising awareness of different perspectives
Model Alignment
•Models can be aligned in 3 dimensions: Vertically - From less detail to more detail
Horizontally - Across Jurisdictions (Perspectives)
Over Time - Multiple Versions
•Each model represents a congruent whole - i.e. is internally consistent
•Different organizations or jurisdictions have different perspectives and can have different models to represent their interests
Level of Detail
Conceptual
Contextual
Logical
Physical
Figure 1: Each Data Model Covers the Same Scope
ScopingShared UnderstandingSpecification
Solution
ImplementationConstruction
Contextual
Conceptual
LogicalDesign
PhysicalDesign
PhysicalObjects
DeployedObjects
Wh
at
Wh
y
Wh
o
How
Wh
ere
Wh
en
Common Concept Model•Represents the key concepts that must be commonly understood to share meaning
•Has insufficient detail to construct messages orbuild information systems
•Provides a foundation structure for more detailed models or models representingdifferent perspectives
•Provides an aid to aligning models via cross-references
Canadian Health Data Model
•Background
•Objectives
•Development Process
•What does it look like
•Significant Patterns
•Proposal
Background
•Canada has another “standards process “ -CIHI Partnership for Informatics and Telematics
•Partnership WG1 developed a Health Information Framework (1997) to describe the scope of information of interest to the entire health system (with an emphasis on population health)
•Data Model Project struck to identify primary data needed to meet Health Information Framework requirements
Objectives
•ComprehensiveTo reflect current knowledge and practice across jurisdictions.
•FlexibleTo provide a basis for integration of data across jurisdictions.
•DurableTo be resilient to change.
•UniversalRelevant to all jurisdictions in Canada and beyond
Development Process•Working Group Representing multiple perspectives and jurisdictions•Examined various models available•Chose HL7 RIM as staring point•Examined fit to Health Information Framework
requirements•Synthesized extensions from various models•Tested against Scenarios•Used Scenarios to develop extensions where
information requirements weren’t met•Abstracted/refined until reached congruence•Tested against Scenarios and other perspectives
Resource
RequiresAffects
MonitoringSurveillanc
eResearch
GovernanceEvent
ParticipantRole
Environment
Event Linkage
People
Person
Group
ResourceEvent
Place
EnvironmentEvent
Governance
Isexecute
dby
peoplein
Defines
Affectedby
Occursat
Is locatedat
Constrains
Is takenby
Is locatedat
Isaffected
by
AreLocated
at
Characteristicof
MonitoringSurveillanc
eResearch
People Event
MonitoringSurveillanc
eResearch
IsAffected
By
Involves peoplein
Constrains
Is executedby
ServiceRecipient
Event
CIHI Canadian Health DataModel Project
Page-1January 24, 1999
Page: 1 of 1
Occursat
Affects
Defines
Is executedby
MonitoringSurveillanc
eResearch
Constrains
Skills
Possess
Significant Patterns
1) events affect the state of their respective classes
2) event linkage
3) governance constrains events and
4) governance events monitor the state of everything
People
CIHI Canadian Health DataModel Project
Page-1January 24, 1999
Page: 1 of 1
Governance
Mission / Purpose
Core Activity Policy
Strategy & Tactics
Accountability
Goals & Objs
Program Service
Jurisdiction
Org Structure
MonitoringSurveillanc
eResearch
GovernanceEvent
ParticipantRole
Environment
ResourceEvent
EnvironmentEvent
Isexecute
dby
Defines
Constrains
Is takenby
Isaffected
by
MonitoringSurveillanc
eResearch
People Event
MonitoringSurveillanc
eResearch
Involves peoplein
Constrains
ServiceRecipient
Event
Defines
Is executed by
Characteristicof
MonitoringSurveillance
Research
Constrains
Resource
Requires
Person
Group
Skills
Possess
Proposal Accepted
•Accepted the concept of a
common conceptual model•International Committee to work to
synthesize common conceptual
model (CCM)•Canadian Health Data Model work
in progress considered along with
other jurisdiction’s models•Map the RIM to the CCM•Participate in a process to cross-
reference to other models