OHDSI Standardized Vocabularies-a large-scale centralized reference ontology for international data harmonization.

ABSTRACT:

Importance

The Observational Health Data Sciences and Informatics (OHDSI) is the largest distributed data network in the world encompassing more than 331 data sources with 2.1 billion patient records across 34 countries. It enables large-scale observational research through standardizing the data into a common data model (CDM) (Observational Medical Outcomes Partnership [OMOP] CDM) and requires a comprehensive, efficient, and reliable ontology system to support data harmonization.

Materials and methods

We created the OHDSI Standardized Vocabularies-a common reference ontology mandatory to all data sites in the network. It comprises imported and de novo-generated ontologies containing concepts and relationships between them, and the praxis of converting the source data to the

SUBMITTER: Reich C 

PROVIDER: S-EPMC10873827 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature