valid_start_date
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Property information
comment
(for SourceToConceptMap:) The date when the mapping instance was first recorded.
(for Concept:) The date when the Concept was first recorded. The default value is 1-Jan-1970, meaning, the Concept has no (known) date of inception.
(for ConceptRelationship:) The date when the instance of the Concept Relationship is first recorded.
(for DrugStrength:) The date when the Concept was first recorded. The default value is 1-Jan-1970.
omop cdm name
source_to_concept_map.valid_start_date#420 AS date
concept_relationship.valid_start_date#387 AS date
drug_strength.valid_start_date#405 AS date
concept.valid_start_date#374 AS date