Centre for Virtual Patients

Time And Effort Of Repurposing Virtual Patients From CASUS To CAMPUS Using

The eViP Standard: Automated Vs. Manual Transfer

Centre for Virtual Patients

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

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


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)


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?


Methods• Development of a new CAMPUS player

component enables playback of eViP-Standard-compliant material


Methods

Modification of the CAMPUS authoring component to enable

• …import of eViP-Standard compliant VP with QTI

support• … editing of the imported VP


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)


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


Methods - Automated repurposing• An eViP-Standard compliant export of the

CASUS VP was imported into the CAMPUS authoring component


• 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


Methods - Automated repurposing

Results – Manual repurposing


It took 11,3 hours in average / VP.

Results – Automated repurposing



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

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)

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

Conclusion


• Repurposing VP using the eViP-standard can save time and efforts

• Not completely automated but semi-automated repurposing process

+

Contact:

www.campusvirtuals.de

Thank you!


Is still done • but beforehand• only once

Resulting in an increase in interoperability

Results – manual repurposing



Results – automated repurposing: Problems and Solutions


Problem Solution

Duplicated questions (double import)

Manual deletion

External links did not work (e.g. videos)

Manual integration

Answers to questions were doubled

Manual correction

Results – automated repurposing



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


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

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

Centre for Virtual Patients

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