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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 514

  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 334 156

  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 226 97

Repositories

Showing 10 of 395 repositories
  • Circepy Public

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

    Python 6 1 7 2 Updated Oct 31, 2026
  • ohdsi-uk Public
    OHDSI/ohdsi-uk's past year of commit activity
    R 0 1 1 0 Updated Oct 31, 2026
  • CohortPrevalence Public

    OHDSI package to calculate prevalence

    OHDSI/CohortPrevalence's past year of commit activity
    R 1 Apache-2.0 5 6 0 Updated Oct 30, 2026
  • Cyclops Public

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

    OHDSI/Cyclops's past year of commit activity
    C++ 45 36 9 0 Updated Oct 30, 2026
  • OmopIndices Public
    OHDSI/OmopIndices's past year of commit activity
    R 2 Apache-2.0 1 3 0 Updated Oct 30, 2026
  • Pegasus Public

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

    OHDSI/Pegasus's past year of commit activity
    R 2 0 0 0 Updated Oct 30, 2026
  • Ariadne Public

    A Python toolkit for mapping source terminologies to standard concepts in the OHDSI Vocabulary.

    OHDSI/Ariadne's past year of commit activity
    Python 14 Apache-2.0 4 1 2 Updated Oct 30, 2026
  • GIS Public
    OHDSI/GIS's past year of commit activity
    Python 20 Apache-2.0 11 41 (1 issue needs help) 0 Updated Oct 30, 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 7 7 3 Updated Oct 30, 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 30, 2026

Most used topics

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