Enhancing the AAHA & AAEP Diagnostic...
Transcript of Enhancing the AAHA & AAEP Diagnostic...
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VTSL
Enhancing the AAHA & AAEP
Diagnostic Subsets
2013 Talbot Symposium
Jeff R. Wilcke DVM, MS, DACVCP; Julie M. Green DVM, MS; Suzanne L. Santamaria DVM, MS
Veterinary Terminology Services Laboratory, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA
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VTSL
“No battle plan survives contact with the enemy.”
Helmuth von Moltke
“No software design survives a collision with the user”
Seth Godin
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VTSL
AAHA & AAEP Diagnostic Terms
Lists of veterinary concepts represented by
standardized terms.
“Interoperable” with SNOMED CT®
and other SNOMED-based lists
Include (only) terms used by veterinarians
Account for acceptable synonyms
Provide indication of “preference”
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VTSL
AAHA & AAEP Diagnostic Terms
Concept list (subset) + description list (subset) +
description labels
Creates abilities:
Standardize MEANING
Do NOT restrict language choices
Language manipulated by experts
CAN be manipulated locally
These are “reference subsets” of SNOMED CT ®
Provide concepts and manipulate language
IHTSDO calls these “REFSETS”
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VTSL
AAHA & AAEP Diagnostic Terms
AAHA refset (April 15th release)
3505 Concepts
6315 Descriptions (terms)
AAEP refset (April 15th release)
1111 Concepts
1815 Descriptions
Overlap
366 concepts
Description preferences are not identical
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VTSL
Refset lifecycle
Creation of refset ID
The original state of the refset is zero content.
ALL content in a refset is addition, replacement
or removal.
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VTSL
Refset logical structure
Two lists
A list of concepts selected for veterinary significance
A list of terms (language representations)
Primary and foreign keys between the lists
Histories
of concepts
in core or the extension
in the refset
of terms
in core or the extension
in the refset
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VTSL
Distributing reference sets
First release format (RF1) did not survive first contact
with “other languages and dialects”.
Veterinary-speak is a variant (dialect?) of medical
speak.
RF1 Deficiencies
No way to distribute delta versions (change sets)
No way to distribute independent history of the term list
RF1 Irritations
Unhelpful information included in the release
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VTSL
Distribution goals Things we wanted to do but could not
1. Distribute only acceptable descriptions
2. CLEARLY designate preferred terms
3. Distribute history of the refset itself
4. Distribute various levels file specifications
Full distribution
Snapshot
Changes only
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VTSL
Distribution goals
RF1 Work-around(s)
Only acceptable descriptions
Appended a list of “acceptable descriptionIDs”
Designate preferred terms
Appended a list of “preferred descriptionIDs”
History of the refset itself
No work around (and no demand)
File content types
No work around (and no demand)
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VTSL
Distribution goals
Things required by the RF1 schema that we
wanted to avoid
Unwanted attributes
isPrimitive status
conceptStatus
SNOMED ID (e.g., DD-92110)
CTVIII codes (e.g., x70sy)
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VTSL
Distribution goals
Properly represent SNOMED CT ® (RF2)
Now only two description “statuses”
“fully specified name”
“synonym”
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VTSL
Refset content types
Full release
Complete content of the refset
All first version content + additions, corrections, retirements
Delta release
A change set
Additions, corrections, retirements for a specified time
period.
Snapshot
The content of the refset at a particular point in time.
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VTSL
Design goals
One schema/format for three release types
Full release = every concept, every description, plus
history
Snapshot (current state) = most recent version of
every concept and every description
Full release includes “hidden” snapshot **This bullet has been edited since the original presentation. Please be advised that a snapshot is a theoretical concept that has not been
executed yet. Interested parties are encouraged to contact the lab.**
Change set = only changes since some previous
state
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VTSL
Using the formats
One schema/format for three release types
Full release = analysis of historical data
Content additions, modifications, retirements over the life
of the subset
Change set = clearly identify only changes made to
some existing state of the refset
Reduced processing overhead of new versions
Snapshot (current state) = confirm correct existing
version of your installation
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VTSL
Release plan SNOMED is currently releasing in RF2
April 15, 2013 (AAHA and AAEP)
Public RF1
Alpha RF2
October 15, 2013 (AAHA and AAEP)
Public RF1
Public RF2
Informal beta test and comment
Dual release for some number of “versions”
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VTSL
Release plan
Present RF2 resources
Full release file
Schema
Draft documentation
Future RF2 resources
Posted (static) Full release file on existing schedule
Documentation
Webservice for all formats
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VTSL
Contact us
http://vtsl.vetmed.vt.edu
Suggestions for “tweaks” welcome