The Observational Health Data Sciences and Informatics (or OHDSI, pronounced "Odyssey") program is a multi-stakeholder, interdisciplinary collaborative to bring out the value of health data through large-scale analytics. All our solutions are open-source.

OHDSI has established an international network of researchers and observational health databases with a central coordinating center housed at Columbia University.

Our Mission

To improve health by empowering a community to collaboratively generate the evidence that promotes better health decisions and better care.

Our Vision

A world in which observational research produces a comprehensive understanding of health and disease.

Our Objectives

Innovation: Observational research is a field that will benefit from disruptive thinking. We actively seek and encourage fresh methodological approaches in our work.

Reproducibility: Accurate, reproducible, and well-calibrated evidence is necessary for health improvement.

Community: Everyone is welcome to actively participate in OHDSI, whether you are a patient, a health professional, a researcher, or someone who simply believes in our cause.

Collaboration: We work collectively to prioritize and address the real-world needs of our community's participants.

Openness: We strive to make all our community's proceeds open and publicly accessible, including the methods, tools, and evidence that we generate.

Beneficence: We seek to protect the rights of individuals and organizations within our community at all times.