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documentation:cdm:measurement [2014/12/06 16:45] cgreich |
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* For some Measurement Concepts, the result is included in the test. For example, SNOMED-CT 71628007 concept_id 4325125 'Abnormal presence of albumin' indicates a Measurement (albumin in sample) and the result (abnormal). In future releases of the Standardized Vocabularies, these will be split into the correct Measurement and result. | * For some Measurement Concepts, the result is included in the test. For example, SNOMED-CT 71628007 concept_id 4325125 'Abnormal presence of albumin' indicates a Measurement (albumin in sample) and the result (abnormal). In future releases of the Standardized Vocabularies, these will be split into the correct Measurement and result. | ||
* The operator_concept_id is optionally given for relative Measurements where the precise value is not available but its relation to a certain benchmarking value is. For example, this can be used for minimal detection thresholds of a test. | * The operator_concept_id is optionally given for relative Measurements where the precise value is not available but its relation to a certain benchmarking value is. For example, this can be used for minimal detection thresholds of a test. | ||
- | * The meaning of Concept 4172703 for '=' is identical to omission of a operator_concept_id value. Since the use of this field is rare, it's important when devising analyses to not to forget testing for the content of this field. | + | * The meaning of Concept 4172703 for '=' is identical to omission of a operator_concept_id value. Since the use of this field is rare, it's important when devising analyses to not to forget testing for the content of this field for values different from =. |
* Valid Concepts for the operator_concept_id field belong to the 'Meas Value Operator' domain. | * Valid Concepts for the operator_concept_id field belong to the 'Meas Value Operator' domain. | ||
* The Unit is optional even if a value_as_number is provided. | * The Unit is optional even if a value_as_number is provided. |