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@OHDSI

Observational Health Data Sciences and Informatics

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  1. CommonDataModel CommonDataModel Public

    Definition and DDLs for the OMOP Common Data Model (CDM)

    HTML 1k 486

  2. Vocabulary-v5.0 Vocabulary-v5.0 Public

    Build process for the OHDSI Standardized Vocabularies. Currently not available as independent release.

    PLpgSQL 260 75

  3. Atlas Atlas Public

    ATLAS is an open source software tool for researchers to conduct scientific analyses on standardized observational data

    JavaScript 307 147

  4. Cyclops Cyclops Public

    Cyclops (Cyclic coordinate descent for logistic, Poisson and survival analysis) is an R package for performing large scale regularized regressions.

    C++ 42 33

  5. CohortMethod CohortMethod Public

    An R package for performing new-user cohort studies in an observational database in the OMOP Common Data Model.

    R 89 69

  6. PatientLevelPrediction PatientLevelPrediction Public

    An R package for performing patient level prediction in an observational database in the OMOP Common Data Model.

    R 213 91

Repositories

Showing 10 of 370 repositories
  • Capr Public

    Cohort definition Application Programming in R

    OHDSI/Capr’s past year of commit activity
    R 20 Apache-2.0 17 14 3 Updated Feb 16, 2026
  • Circepy Public

    [under development] A one to one python implementation of the circe-be cohort definition classes

    OHDSI/Circepy’s past year of commit activity
    Python 4 1 7 3 Updated Feb 16, 2026
  • Data2Evidence Public

    Data2Evidence is an end-to-end solution for management and analysis of OMOP data - https://data2evidence.org

    OHDSI/Data2Evidence’s past year of commit activity
    TypeScript 32 Apache-2.0 10 271 38 Updated Feb 16, 2026
  • trex Public

    [Under development] Trex is the runtime for the D2E platform

    OHDSI/trex’s past year of commit activity
    Rust 2 MIT 0 0 1 Updated Feb 16, 2026
  • ohdsi-uk Public
    OHDSI/ohdsi-uk’s past year of commit activity
    R 0 1 1 0 Updated Feb 16, 2026
  • PatientLevelPrediction Public

    An R package for performing patient level prediction in an observational database in the OMOP Common Data Model.

    OHDSI/PatientLevelPrediction’s past year of commit activity
    R 213 91 41 (1 issue needs help) 7 Updated Feb 15, 2026
  • WebAPI Public

    OHDSI WebAPI contains all OHDSI services that can be called from OHDSI applications

    OHDSI/WebAPI’s past year of commit activity
    Java 144 Apache-2.0 177 133 (1 issue needs help) 29 Updated Feb 14, 2026
  • ArachneExecutionEngine Public

    Arachne Execution Engine is a component used to execute remote SQL or R code. It is used by both Arachne Data Node as well as WebAPI

    OHDSI/ArachneExecutionEngine’s past year of commit activity
    PLpgSQL 10 10 4 4 Updated Feb 13, 2026
  • Keeper Public

    A tool to support case validation

    OHDSI/Keeper’s past year of commit activity
    R 6 2 4 0 Updated Feb 13, 2026
  • Strategus Public

    An R package for coordinating and executing analytics using HADES modules

    OHDSI/Strategus’s past year of commit activity
    R 8 15 31 5 Updated Feb 13, 2026
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