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Welcome to OHDSI

OHDSI is a multi-stakeholder, interdisciplinary collaborative that is striving to bring out the value of observational health data through large-scale analytics. The OHDSI Research Network spans over 600 million patients. We hope you'll Join the OHDSI Journey.

Find out more at


Learn how to implement the OMOP CDM and use OHDSI's analytics tools to get more out of your data.


Contribute to OHDSI open-source software development and methodology research.


Ask questions of the OHDSI community and join the OHDSI research network.

welcome.1416070860.txt.gz · Last modified: 2014/11/15 17:01 by jduke