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. 2017 Sep 11;26(1):139–147. doi: 10.15265/IY-2017-018

Fig. 1 Representation of the PCORnet and OMOP Common Data Model (CDM) domains alongside the FHIR interoperability standard. CDMs are filled with clinical data derived from EHR systems via an extract, transform, and load (ETL) procedure. Clinical data domains are stored as tables within each of the CDMs, noted by the interior boxes. In the figure, the horizontal boxes presented in gray shading connect overlapping domain groupings between the models. Both CDMs also include data domains not represented here, such as cohort definitions. The FHIR standard allows transmission among EHRs, CDMs, Electronic Data Warehouses (EDWs), and data lakes.

Fig. 1 Representation of the PCORnet and OMOP Common Data Model (CDM) domains alongside the FHIR interoperability standard. CDMs are filled with clinical data derived from EHR systems via an extract, transform, and load (ETL) procedure. Clinical data domains are stored as tables within each of the CDMs, noted by the interior boxes. In the figure, the horizontal boxes presented in gray shading connect overlapping domain groupings between the models. Both CDMs also include data domains not represented here, such as cohort definitions. The FHIR standard allows transmission among EHRs, CDMs, Electronic Data Warehouses (EDWs), and data lakes

. * Patient-Reported Outcome Common Measures** The Observation domain allows storage of data not represented elsewhere in the CDM.