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Welcome to OHDSI (7)

Concomitant medications (3)

Which one is correct if the CMD description in the github web and the pdf file are different? (6)

Is there a high-resolution version of the OMOP ER Diagram somewhere? (6)

Book of OHDSI test print! (3)

CT scan (2)

Mapping for patient referrals to specialist, etc (3)

Why have drug strength invalid_reason? (1)

How to represent ranges in the MEASUREMENT table? (10)

Hematologic Malignancy Response Criteria (8)

Unable to run Achilles on MySQL database (4)

Family history in CDM (3)

How can i make relationship of Initial Events? (2)

When Achilles is executed to create the achilles_results table, an error of "relationship" s_tmpach_1425 "does not exist" occurs. (1)

Ohdsi 2019 symposium collaborator showcase submissions due today! (1)

Engagement with other research networks (2)

Difference in number at risk of KM curve with study population (3)

Submissions for the 2019 ohdsi symposium collaborator showcase are due in 5 days! (1)

Questions on generating repetitive cohorts in Atlas (4)

Oncology Workgroup (5)

Workgroup for Cost, Utilization, Economic, Services (20)

Data quality metric around death (discussion; location of death) (4)

Specimen in 1k sample of cms synpuf data in CDMV5 Format (2)

NDCs Changing Over Time (8)

Survey Data (3)

Concept_id in measurement (8)

Book of OHDSI - Characterization (2)

New synpuf data set which is converted into CDM (1)

Department in Visit_Occurrence table (5)

Clinical data ER-diagrams (4)

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