Page History
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| Name | Description | Target Data Model |
|---|---|---|
| i2b2 Demo Ontology | default metadata from i2b2 authors | i2b2 Common Data Model (star-schema); default CRC demo database has matching concepts |
| ACT Ontology | ENACT project | i2b2 Common Data Model (star-schema); ACT CRC demo database has matching concepts |
| ACT-on-OMOP Ontology | ENACT project | i2b2 Common Data Model (star-schema), but modified with views into the OMOP Common Data Model; the CRC database loaded with SYNPUF demo data has matching concepts |
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|---|---|---|
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A Common Data Model (CDM) is a way of organizing data into standardized structures and observational content to enable alignment of patient data across multiple organizations. Each i2b2 ontology leverages the i2b2 Common Data Model (CDM), which is based on a "star schema": instead of separate tables for diagnoses, medications, and other data types, all patient observations are stored in a single "fact" table, and the ontology describes the different codes that are placed in this fact table. |
The table below outlines the domains and coding schemes included in each ontology.
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Diagnoses
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Medications
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RxNorm
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NDC
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SNOMED CT
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| If your local institution does not have data in the CRC database for a certain domain in your chosen i2b2 ontology, then user queries referencing that domain may come back empty. To avoid that, you can exclude that domain from the i2b2 user interface, so that the domain without matching data in the CRC database is never used in a query. |
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