CdmOnboarding is an R Package to support the onboarding process of a Data Partner (DP) into the DARWIN EU® Data Network. It extracts statistics from the DP's OMOP CDM instance and produces a Word document. The goal of this onboarding report is to provide insight into the completeness, transparency and quality of the performed Extraction Transform, and Load (ETL) process and the readiness of the data partner to be onboarded in the DARWIN EU®  data network and participate in DARWIN EU® studies.

The onboarding report consists of three sections. The Clinical Data section reports on data table counts, data density, follow-up period length and date ranges. The Vocabulary Mapping section is especially important for data quality, as it shows the concept mapping coverage per domain and the top mapped/unmapped codes. Finally, the Technical Infrastructure section gives insight into the readiness of the DP to execute studies, with overviews of the query timings, installed packages and system information.

CdmOnboarding is run on-site by the DP, and extracts data directly from the OMOP CDM and from pre-calculated tables from Achilles (OHDSI R package for OMOP CDM characterisation). The resulting Word document is required as an annex to the main Onboarding Document, to be delivered upon first onboarding. However, CdmOnboarding is required to be run on every CDM refresh, and results shared with the CC for inspection.