The changes in this section pertain to additions to the Automated Characterization of Health Information at Large-scale Longitudinal Evidence Systems (ACHILLES) R Package for OMOP CDM v5 databases introduced in the v1.5.0 release. If you are setting up WebAPI/Atlas v2.2.0 or later to work with an OMOP CDM v5, please read this section to ensure all of the dependencies required are established otherwise aspects of WebAPI/Atlas may not work.

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ACHILLES is a platform which enables the characterization, quality assessment and visualization of observational health databases. With the release of V1.5.0, additional methods and resulting tables were added to aid in the performance when querying Achilles results from WebAPI/Atlas. This article will detail the changes and the steps to take to upgrade to WebAPI/Atlas V2.2.0 or later.

If you complete a full run of Achilles v.1.5.0 on your OMOP CDM v5 with the default settings, you will not need to complete any of the steps in this article. If you have an OMOP CDM v5 and you ran Achilles in the past (prior to v.1.5.0) then you will need to read and complete the steps below to work with WebAPI/Atlas V2.2.0.

Resources:

• Achilles source code and installation instructions: https://github.com/OHDSI/Achilles
• Achilles releases: https://github.com/OHDSI/Achilles/releases

The following sections will describe the additions in Achilles V1.5.0, how to verify if you have the additional dependencies required by WebAPI/Atlas and how to run Achilles R commands to make your Achilles installation compatible with WebAPI/Atlas V2.2.0.