ehrQL is a Python-based query language for electronic health record (EHR) data. It has been designed for use with the OpenSAFELY platform.
Documentation is at the OpenSAFELY documentation site.
See DEVELOPERS.md.
There is also a glossary of terms used in the codebase.
The OpenSAFELY framework is a Trusted Research Environment (TRE) for electronic health records research in the NHS, with a focus on public accountability and research quality.
Read more at OpenSAFELY.org.