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Critical Care Data Exchange Format (CCDEF) is a data standard for efficiently encoding, storing, and working with the types of multimodal datasets typical of critical care patient data – namely, patient metadata, low-density numerics, and high-density waveforms. The format’s purpose is to standardize how patient data may be stored, analyzed, and exchanged in clinical research studies.

The standard has been shared as a collaborative effort by researchers from Carnegie Mellon University, Queen’s University School of Medicine, University of Pittsburgh Medical Center, and University of Virginia School of Medicine.

To view the current version of the CCDEF standard, click here.

Open-source tools for working with the CCDEF format include the following:

• Auton Universal Data: github / pypi
• Auton Universal Viewer: github / documentation / pypi

For questions, discussion, and support, visit or subscribe to the CCDEF User group/mailing list.