https://w3id.org/omop/ontology/date
For Specimen: The date the specimen was collected. - For Note Nlp: The date of the note processing. - For Measurement: Use this date to determine the date of the measurement. If there are multiple dates in the source data associated with a record such as order_date, draw_date, and result_date, choose the one that is closest to the date the sample was drawn from the patient. - For Observation: The date of when the Observation was obtained. Depending on what the Observation represents this could be the date of a lab test, the date of a survey, or the date a patient's family history was taken. For some observations the ETL may need to make a choice as to which date to choose. - For Death: The date the person was deceased. If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day. For additional conventions related to this field, please refer to the [THEMIS repository](https://ohdsi.github.io/Themis/tag_death_date.html). - For Procedure Occurrence: Use this date to determine the date the procedure started. This is meant to be the **start date** of the procedure. It will be renamed in a future version to **PROCEDURE_START_DATE**. - For Note: The date the note was recorded.
@prefix omop: <https://w3id.org/omop/ontology/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
omop:date a owl:DatatypeProperty,
owl:FunctionalProperty ;
rdfs:label "Date"^^xsd:string ;
rdfs:comment "For Death: The date the person was deceased. If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day. For additional conventions related to this field, please refer to the [THEMIS repository](https://ohdsi.github.io/Themis/tag_death_date.html). "@en,
"For Measurement: Use this date to determine the date of the measurement. If there are multiple dates in the source data associated with a record such as order_date, draw_date, and result_date, choose the one that is closest to the date the sample was drawn from the patient."@en,
"For Note Nlp: The date of the note processing."@en,
"For Note: The date the note was recorded."@en,
"For Observation: The date of when the Observation was obtained. Depending on what the Observation represents this could be the date of a lab test, the date of a survey, or the date a patient's family history was taken. For some observations the ETL may need to make a choice as to which date to choose."@en,
"For Procedure Occurrence: Use this date to determine the date the procedure started. This is meant to be the **start date** of the procedure. It will be renamed in a future version to **PROCEDURE_START_DATE**."@en,
"For Specimen: The date the specimen was collected."@en ;
rdfs:domain omop:Event ;
rdfs:range xsd:date ;
omop:omop_cdm_name "death.death_date#179 AS date"^^xsd:string,
"measurement.measurement_date#137 AS date"^^xsd:string,
"metadata.metadata_date#332 AS date"^^xsd:string,
"note.note_date#187 AS date"^^xsd:string,
"note_nlp.nlp_date#210 AS date"^^xsd:string,
"observation.observation_date#160 AS date"^^xsd:string,
"procedure_occurrence.procedure_date#102 AS date"^^xsd:string,
"specimen.specimen_date#219 AS date"^^xsd:string .