National Nodes in the OHDSI Europe Chapter.

The number of Data Partners in Europe is growing fast due to the success of the European Health Data and Evidence Network (EHDEN) project as shown in the figure below (for details see

Also many other European consortia are working with the OMOP-CDM and are enlarging the European data network:





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If your project is using OMOP-CDM send us an email and we will add it! This email address is being protected from spambots. You need JavaScript enabled to view it. 



The OHDSI Europe Chapter in collaboration with the EHDEN project is starting the process to create National Nodes to facilitate national and international collaborations.

An OHDSI Europe National Node is a collection of research institutes within a member country.  The Node builds on the strengths of the stakeholders and scientific communities of that country. 

Each Node has a lead institute that oversees the work of that Node and assigns a lead and co-lead. 

We have onboarded Belgium, Denmark, EstoniaGermany, Greece, Israel, Italy, Luxembourg, The Netherlands, Norway, Portugal, Spain, UK.

We plan to onboard more in the future. 

How to establish a National Node?

To establish a national node the following process should be followed: 

1. Submit a letter of intent to the European OHDSI coordinating center by email: This email address is being protected from spambots. You need JavaScript enabled to view it.. The letter must include:

  • A list of all current node members, the list must include collaborators from multiple organisations.
  • A list of Data Partners with information on the status of the OMOP-CDM ETL.
  • A description outlining the node’s aims and objectives

2. The OHDSI Europe coordinating center will review the application

3. If approved a session will be planned between the European coordinating center and the National Node leadership

4. The MS Teams channel will be created for the National Node in the European OHDSI team

All OHDSI Europe National Nodes must adhere to the following guidelines:

  1. The aims and objectives of the node must adopt OHDSI’s mission, vision and values
  2. All activities, events and meetings must be inclusive and open to all who wish to participate
  3. All materials and documents must be openly accessible on the internet. If the node chooses to maintain a website, that website must include links to and
  4. The node must meet regularly (either in-person or remotely) to discuss making progress towards their intended goals
  5. The node is responsible for its own governance, organisation and funding
  6. The node is responsible for communicating chapter activities to collaborators located within their geographic region
  7. The node must submit an annual report to the OHDSI Europe coordinating center detailing their activities and achievements over the past year. OHDSI Europe will report back to OHDSI global coordinating center
  8. The node is advised to use the OHDSI Europe MS Teams environment made available by OHDSI Global
  9. The node should report back to OHDSI Europe in its bi-monthly OHDSI Europe Steering Committee Call
  10. The OHDSI Europe coordinating center reserves the right to disband a node if their activities do not align with OHDSI’s mission