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AMIA Annu Symp Proc. 2013 Nov 16;2013:648-56. eCollection 2013.

Desiderata for healthcare integrated data repositories based on architectural comparison of three public repositories.

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Laboratory for Informatics Development, NIH Clinical Center, Bethesda, MD.


Integrated data repositories (IDRs) are indispensable tools for numerous biomedical research studies. We compare three large IDRs (Informatics for Integrating Biology and the Bedside (i2b2), HMO Research Network's Virtual Data Warehouse (VDW) and Observational Medical Outcomes Partnership (OMOP) repository) in order to identify common architectural features that enable efficient storage and organization of large amounts of clinical data. We define three high-level classes of underlying data storage models and we analyze each repository using this classification. We look at how a set of sample facts is represented in each repository and conclude with a list of desiderata for IDRs that deal with the information storage model, terminology model, data integration and value-sets management.

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