Transcript Repurposing virtual patients for clinical reasoning

Centre for Virtual Patients
Time And Effort Of Repurposing Virtual
Patients From CASUS To CAMPUS Using
The eViP Standard:
Automated Vs. Manual Transfer
Benjamin Hanebeck1; Stephan Oberle1; Jörn Heid2; Frank Hess2; Inga Hege3; Martin
Fischer4; Martin Haag2; Sören Huwendiek1
1Department
of General Paediatrics, University Hospital for Adolescent and Paediatric Medicine and Centre for Virtual Patients,
Medical Faculty of Heidelberg University, Heidelberg, Germany ; 2Centre for Virtual Patients, Medical Faculty of Heidelberg
University, Heidelberg, Germany ; 3Ludwig-Maximilians-University München, Germany ; 4University Witten-Herdecke, Germany
2nd International Conference on Virtual Patients
& MedBiquitous Annual Conference, 28.04.2010
Centre for Virtual Patients
Introduction
• Developing new virtual patients (VP) is costly
• Repurposing existing VP is a reasonable means
to save resources
• However, transfer of VP between different VP
systems is complicated
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Introduction
• VP Standard was established:
Medbiq VP taken as part of the eViP-standard as
a shared structure
• System specific features can be covered by
extensions
– QTI extension for knowledge-questions
– ...
Additionally, a repurposed VP needs to be
adapted to local needs (content, scenario)
Centre for Virtual Patients
Introduction
• Efforts, boundaries and benefits of using
the eViP-standard to transfer a VP from
one VP-system to another are, as yet,
unreported.
• Does the standard reduce efforts by
enabling automatic repurposing?
Centre for Virtual Patients
Introduction
• Efforts, boundaries and benefits of using
the eViP-standard to transfer a VP from
one VP-system to another are, as yet,
unreported.
• Does the standard reduce efforts by
enabling automatic repurposing?
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Methods
• Development of a new CAMPUS player
component enables playback of eViPStandard-compliant material
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Methods
Modification of the CAMPUS authoring
component to enable
• …import of eViP-Standard compliant VP with QTI
support
• … editing of the imported VP
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Methods
• Choice of an appropriate VP-System for
VP exchange / automated repurposing
• CASUS and CAMPUS
– linear VP structures
– QTI extension
• Selection of 15 VP from CASUS
in average 17,7 cards/VP (± 6,2)
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Methods - Manual repurposing
• A new blank CAMPUS VP was created
• The content was copied manually from the
existing CASUS VP into the CAMPUS authoring
component
• Question were recreated where possible, Media
was embedded
• Efforts were noted by using the eViP effort sheet
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Methods - Automated repurposing
• An eViP-Standard compliant export of the
CASUS VP was imported into the CAMPUS
authoring component
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Methods - Automated repurposing
• Playback and check of the VP
• Corrections were made where necessary
• Efforts were noted manually
• In all cases of manual and automatic import:
No efforts for content adaption were taken into
account
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Results – Manual repurposing
It took 11,3 hours in average / VP.
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Results – Automated repurposing
It took 1,8 hours in average / VP.
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Results – Automated repurposing:
Issues
Problems:
• Hyperlinks imported incorrectly
(concerning CASUS Expert Network, links to videos,
external resources…)
• Some questions displayed incorrectly (e.g. sorting task)
• Layout problems (e.g. different font types)
• Labels of pictures not displayed
Solutions: Manual corrections
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Boundaries
• Originating VP has to be eViP-Standard compliant
• As many extensions as possible should be shared between
the used VP systems (e.g. QTI)
• Results were achieved with easy repurposing approach
(linear pathway, QTI extension, same language)
• Efforts increase with differences between VP systems (e.g.
linear vs. branched)
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Benefits
• Repurposing VP is a lot more time efficient by using an
automated import
• Only little corrections necessary
• Adaptations / extension of content in target VP system
possible
• Improving of export/import-functionalities continuously
increases quality of interoperability
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Conclusion
• Repurposing VP using the eViP-standard can save time and
efforts
• Not completely automated but semi-automated repurposing
process
+
Centre for Virtual Patients
Thank you!
Contact:
www.campusvirtuals.de
Is still done
• but beforehand
• only once
Resulting in an increase
in interoperability
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Results – manual repurposing
It took 11,3 hours in average / VP.
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Results – automated repurposing:
Problems and Solutions
Problem
Solution
Duplicated questions Manual deletion
(double import)
External links did not Manual integration
work (e.g. videos)
Answers to
questions were
doubled
Manual correction
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Results – automated repurposing
It took 1,8 hours in average / VP.
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Introduction
• Remaining problem:
– Teaching content sometimes differs not only
internationally but also nationally
– Often an identical reproduction of a VP is not
satisfactory for teachers
• Need:
No playback-only solution, but possibilities
to edit and adapt a VP
Centre for Virtual Patients
Results – manual repurposing:
Problems and Solutions
Missing question types
• Problem: some types are not natively supported by
CAMPUS authoring component (e.g. rating of symptoms,
sorting tasks)
• Solution:
• manual substitution by an available question type
(e.g. MCQ, free text) covering the same content
• manual creation of an interactive graphic based on
Flash using an editor implemented in CAMPUS
Centre for Virtual Patients
Methods
• CAMPUS, a system for learning with VP exists
since 1996
• Consists of
–
–
–
–
An authoring system
A simulative Java based player
A card-based eViP standard compliant player
An application for secure, keyfeature-based
assessments
• Linear order of interactions