International Evaluation of Triage Effectiveness Metrics in Emergency Departments
3/4trics is an international multicenter research project aimed at evaluating an innovative metric for triage effectiveness in emergency departments, developed by André Johansson (Lund University, Sweden). The project relies on a federated analysis approach: each site performs row-level analysis locally, then shares only aggregated data. The primary analysis code is already developed, requiring approximately 20-30 hours of analyst time per site for concept mapping and data extraction.
International multicenter federated study
Federated analysis: row-level data processed locally, aggregated results shared
Ready for primary analysis
~20-30h of analyst work per site
International emergency departments
France, Sweden, United States
Primary: Evaluate and validate a triage effectiveness metric across international multi-site ED data.
Secondary:
The federated approach ensures data sovereignty at each site. All row-level analysis is performed at the primary site using the provided analysis code. Only aggregated data is shared between partners for comparative analysis. This design enables international collaboration while respecting local regulatory requirements (GDPR, HIPAA).
Mapping local concepts and variables to the common schema
Local data extraction following the standardized protocol
Running the primary analysis code at each site
Sharing aggregated results and international comparative analysis
International coordination
Metric developer
Yale School of Medicine
Emergency Department
UVA Health
Dept. of Emergency Medicine
France partner
Emergency Department
A non-disclosure agreement (NDA) has been established between stakeholders regarding information shared within this project. The federated analysis ensures that individual-level data never leaves the originating site.