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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 1.1k 513

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

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

    PLpgSQL 275 75

  3. Atlas Atlas Public

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

    JavaScript 331 156

  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++ 45 36

  5. CohortMethod CohortMethod Public

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

    R 93 69

  6. PatientLevelPrediction PatientLevelPrediction Public

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

    R 224 97

Repositories

Showing 10 of 393 repositories
  • OHDSI/CohortSymmetry's past year of commit activity
    R 2 Apache-2.0 0 15 (1 issue needs help) 0 Updated Oct 24, 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 44 Apache-2.0 13 486 39 Updated Oct 24, 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 6 1 6 1 Updated Oct 24, 2026
  • ohdsi-uk Public
    OHDSI/ohdsi-uk's past year of commit activity
    R 0 1 1 0 Updated Oct 24, 2026
  • PhenotypeR Public
    OHDSI/PhenotypeR's past year of commit activity
    R 10 Apache-2.0 2 65 4 Updated Oct 23, 2026
  • Pegasus Public

    Phenotype Evaluation and Generation by AI-assisted Synthesis & User Specifications

    OHDSI/Pegasus's past year of commit activity
    R 2 0 3 0 Updated Oct 23, 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 153 Apache-2.0 186 134 (1 issue needs help) 32 Updated Oct 23, 2026
  • Atlas3 Public

    A complete reimplementation of OHDSI ATLAS for cohort definition and analysis, built with Vue 3 and TypeScript.

    OHDSI/Atlas3's past year of commit activity
    TypeScript 13 Apache-2.0 6 6 2 Updated Oct 23, 2026
  • OncologyWG Public

    Oncology Working Group Repository

    OHDSI/OncologyWG's past year of commit activity
    Ruby 67 Apache-2.0 24 171 19 Updated Oct 23, 2026
  • trex-notebook Public

    Embeddable React notebook component with Python (Pyodide), R (WebR) support

    OHDSI/trex-notebook's past year of commit activity
    TypeScript 0 Apache-2.0 2 0 4 Updated Oct 23, 2026