HADES is developed and maintained by the HADES Workgroup of the OHDSI community.

Online discussions

Online discussions can take place in the HADES Teams or on the OHDSI forums.


The HADES workgroup has regular meetings. Meetings are open to all, and will be held on the third Thursday of the month. Time (DST where appropriate):

  • 6pm Central European time
  • 5pm UK time
  • 12pm (noon) Eastern Time (New York / New Jersey / Pennsylvania)
  • 9am Pacific Time (Los Angeles / Stanford)

Teams meeting details:

URL: Join Microsoft Teams Meeting

Package maintainers

Each package in HADES has one or two maintainers. These maintainers have the final responsibility and authority over their package. These are the expectations of package maintainers:

  • Represent the package in the HADES group discussions.
  • Ensure that issues are resolved in a timely manner.
  • Review and merge pull requests.
  • Create releases (and communicate upcoming releases to those that need to know).
  • Adapt the package to changes in its dependencies (including R packages, R itself, and the infrastructure).
  • Develop new functionality depending on the needs of the community.
  • Adhere to and enforce the HADES standards, such as the Developer Guidelines and Code Style Guide.