We are proud to announce the publication of the version 2 of the
Guideline Definition Language (GDL2) design specification
<https://specifications.openehr.org/releases/CDS/latest/GDL2.html>.
Exactly six years has passed since the first version of GDL was
published by the openEHR Foundation, GDL-based CDS applications have
been deployed to improve healthcare in Swedish regions, e.g. the stroke
prevention app, clinically validated by a large scale randomized
clinical trial led by the cardiologists from the Linköping University
Hospital
<https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1002528>.
There have been two successful Summer CDS App Challenges
<https://cds-apps.com/> with participants from Sweden, Finland, UK and
USA. More than 150 archetypes/GDL based apps
<https://github.com/gdl-lang/common-clinical-models>have been built and
published under open source license by informatics/medical students as
part of our community outreach programme. For several years, GDL has
been taught as part of the Clinical Decision Support lectures at the MSc
Health Informatics programme at Karolinska Institutet, Sweden.
More recently GDL2 has been used to create detailed personalized care
plans for elderly patients with multiple chronic conditions in a
EU-funded project known as C3-cloud <http://c3-cloud.eu/c3/overview>.
Last year, GDL2-based GP facing CDS apps were developed as part of the
Scotland National CDS project, and received very positive feedback from
the clinicians. The development of the GDL2 design specifications has
been informed by real-life CDS implementation projects as well as other
standardization efforts from openEHR, FHIR, and CDS-hooks.
The plan now is to find synergy and convergence between the
openEHRExpression Language
<https://www.openehr.org/releases/LANG/latest/expression_language.html>,Task
Planning
<https://www.openehr.org/releases/PROC/latest/task_planning.html>and a
future GDL3. We are excited about the next phase of the journey of GDL,
and looking forward to the feedback from the community.
Rong Chen MD PhD,
Cambio CDS, Sweden;
openEHR Specifications Editorial Committee (SEC)
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