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Merge branch 'master' of https://github.com/OHDSI/CommonDataModel.wiki

clairblacketer 2018-05-23 13:48:34 -04:00
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StandardizedClinicalDataTables/MEASUREMENT.md

@ -7,6 +7,7 @@ Field|Required|Type|Description
|measurement_concept_id|Yes|integer|A foreign key to the standard measurement concept identifier in the Standardized Vocabularies.|
|measurement_date|Yes|date|The date of the Measurement.|
|measurement_datetime|No|datetime|The date and time of the Measurement. Some database systems don't have a datatype of time. To accomodate all temporal analyses, datatype datetime can be used (combining measurement_date and measurement_time [forum discussion](http://forums.ohdsi.org/t/date-time-and-datetime-problem-and-the-world-of-hours-and-1day/314))|
|measurement_time |No|varchar(10)|The time of the Measurement. This is present for backwards compatibility and will be deprecated in an upcoming version|
|measurement_type_concept_id|Yes|integer|A foreign key to the predefined Concept in the Standardized Vocabularies reflecting the provenance from where the Measurement record was recorded.|
|operator_concept_id|No|integer|A foreign key identifier to the predefined Concept in the Standardized Vocabularies reflecting the mathematical operator that is applied to the value_as_number. Operators are <, <=, =, >=, >.|
|value_as_number|No|float|A Measurement result where the result is expressed as a numeric value.|