Common Longitudinal ICU data Format (CLIF)
Advancing Critical Care Through Federated Research
An open source data standard for longitudinal ICU data that enables high quality privacy-preserving multicenter research
Privacy-Preserving Federated Research
An open source data standard for longitudinal ICU data that enables high quality privacy-preserving multicenter research
Data Stays Local
Patient-level data never leaves the institution's secure environment
Standardized Format
CLIF ensures all sites structure data identically for seamless analysis
Aggregated Insights
Combined results enable discoveries impossible at single centers
What is CLIF?
The Common Longitudinal ICU data Format is a standardized schema for organizing electronic health record (EHR) data from intensive care units. It enables:
- Federated research across multiple institutions without sharing raw patient data
- Rapid replication of studies using standardized analysis scripts
- Reproducible ML pipelines for predictive modeling in critical care
- Quality benchmarking across healthcare systems
Built for Critical Care Research
Data Dictionary
Comprehensive schema documentation with field definitions, data types, and validation rules for all ICU data elements.
View DictionaryETL Tools
Open source extraction, transformation, and loading tools to convert your institution's EHR data into CLIF format.
Explore ToolsCohort Dashboard
Interactive visualizations of consortium-wide patient demographics, outcomes, and data completeness metrics.
View DashboardPublications
High-impact research papers published by consortium members, demonstrating the power of standardized ICU data.
Read PapersOur Team
Meet the clinician-scientists, data scientists, and researchers driving critical care research forward.
Meet the TeamJoin the Consortium
Interested in participating? Learn how your institution can join our growing network of research partners.
Get StartedA Growing North American Network
Our consortium spans leading academic medical centers across the United States and Canada, united by a commitment to advancing critical care through data-driven research.
Ready to Transform Your ICU Data?
Whether you're looking to join the consortium, adopt the CLIF standard, or collaborate on research, we're here to help.