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
Explore the Four Dimensions of CLIF
High Impact Scientific Papers
Our consortium has published significant research in top-tier journals, demonstrating how CLIF enables rapid, multi-center studies that were previously impossible. From COVID-19 outcomes to sepsis prediction, CLIF supports discoveries that improve patient outcomes.
Read Our Latest PublicationOpen Source Data Dictionary and ETL Tools
CLIF 2.0.0 is the results of years of refinement, shaped by large-scale ICU data spanning multiple institutions and patient populations. Our open-source data dictionary and ETL tools make it easy for any institution to transform their ICU data into the CLIF format, joining our federated research network.
View CLIF-2.0.0 Data DictionaryLarge Distributed Cohort in the Consortium
With 680,158 unique ICU patients and 862,400 encounters across 10 active sites, CLIF provides the statistical power needed for robust research. Our interactive dashboard makes cohort characteristics and demographics readily accessible, supporting the data needs of your studies.
Explore Cohort DashboardOpen Source Products Built on Top of CLIF
From machine learning pipelines to quality improvement dashboards, the CLIF ecosystem includes open-source tools that accelerate research. Build on our foundation with confidence, knowing you're using proven infrastructure designed for critical care analytics.
See What You Can BuildBuilding a Collaborative Foundation for Critical Care Research
We’ve built a geographically diverse network of clinician‑scientists, data scientists, and leading academic medical centers across North America. Together, we leverage deep expertise in EHR‑based clinical outcomes research and AI applications to advance critical care through collaborative, data‑driven research.
Participating Institutions
Unique ICU Patients
ICU Encounters
Hospitals
Open Source Innovation
CLIF is proudly open source software, licensed under the Apache License 2.0. This ensures our tools and standards remain freely available to the global research community, fostering collaboration and supporting critical care research globally.
View Apache 2.0 License