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Welcome to OHDSI
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83
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9574
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October 17, 2025
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CohortDiagnostics Adding Additional Concept Codes Unexpectedly To Phenotype Definition?
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2
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239
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January 9, 2026
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Basis of cancer diagnosis (Observation or Condition)?
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9
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481
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November 17, 2025
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Workgroup - Health Economics & Value Assessment (HEVA)
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15
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595
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October 1, 2025
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Phenotype submission - Guillian Barre Syndrome
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5
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725
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September 26, 2025
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How how to include HLA test into the CDM
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0
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157
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September 25, 2025
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GIS WG Agenda for 2025 Global Symposium
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0
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224
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September 24, 2025
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Search for existing phenotypes in ATLAS?
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0
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215
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September 19, 2025
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ATLAS Estimation: “specification :: negative control - invalid” error when adding negative controls
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0
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172
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September 17, 2025
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Incongruent conventions in OMOP Wiki - DISCHARGE_TO_CONCEPT_ID
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11
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1043
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August 29, 2025
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Only a few hotel rooms left for the Global Symposium- Book Now!
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0
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134
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August 19, 2025
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Looking to transition from programming into the biomedical field, asking for feedback on end-to-end portfolio project ideas
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0
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165
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July 18, 2025
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(Old) Workgroup - Health Economics & Value Assessment (HEVA)
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32
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3154
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July 14, 2025
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Submissions for the Global Symposium due tomorrow at 8pm ET!
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0
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151
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June 30, 2025
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Understanding How cp4.jar Updates OMOP Vocabulary Files
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3
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413
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June 26, 2025
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Brief Report Submissions for the Global Symposium due in one week!
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0
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141
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June 24, 2025
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AI Agent
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0
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196
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June 23, 2025
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Global Symposium Brief Report Submissions due in 2 Weeks!
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2
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160
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June 19, 2025
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Global Symposium Registration and Hotel Room Link
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0
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149
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June 16, 2025
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2025 Global Symposium Showcase Submissions Deadline 3 weeks away!
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0
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154
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June 10, 2025
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New vocabularies broke my concept sets in ATLAS
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0
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218
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June 10, 2025
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Concept set
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3
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234
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June 6, 2025
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DQD duplicate results for OBSERVATION table
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0
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180
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May 28, 2025
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Converting lab results into preferred unit at ETL time
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2
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793
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May 19, 2025
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Global Symposium Brief Report Submission Due Date July 1
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0
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141
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May 19, 2025
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Are 100's of concept sets a maintenance nightmare?
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2
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200
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May 8, 2025
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Is concept_hierarchy table mandatory
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7
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1303
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April 1, 2025
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Paper on OHDSI Phenotyping Practices vs. Global Regulatory Guidance
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3
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209
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March 20, 2025
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Manuscript Draft: Clinical Descriptions as Semantic Anchors: A Best Practice in OHDSI Phenotype Development
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0
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264
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March 16, 2025
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Mapping procedure codes from CCI/CIHI: ICD10PCS heirarchical or SNOMED?
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2
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247
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March 12, 2025
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