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
Built 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.
Read more about CLIFStandardized Format
Purpose-built for longitudinal ICU data, eliminating months of ad-hoc harmonization.
Privacy-Preserving
Federated analytics — only aggregate results are shared, no patient data leaves the institution.
Rapid Multicenter Research
Write once, run across 12+ sites. Hypothesis to multicenter results in weeks, not years.
Open Source
Apache License 2.0 — all tools, ETL pipelines, and specifications are openly available on GitHub.
17 institutions · 62 hospitals · 12 active sites