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Updated OBSERVATION (markdown)

clairblacketer 2017-06-20 13:57:43 -04:00
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StandardizedClinicalDataTables/OBSERVATION.md

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The OBSERVATION table captures clinical facts about a Person obtained in the context of examination, questioning or a procedure. Any data that cannot be represented by any other domains, such as social and lifestyle facts, medical history, family history, etc. are recorded here. The OBSERVATION table captures clinical facts about a Person obtained in the context of examination, questioning or a procedure. Any data that cannot be represented by any other domains, such as social and lifestyle facts, medical history, family history, etc. are recorded here.
Field|Required|Type|Description Field|Required|Type|Description
:----|:----|:-----|:----- :--------------------|:--------|:-----|:-------------------------------------------------------
|observation_id|Yes|integer|A unique identifier for each observation.| |observation_id|Yes|integer|A unique identifier for each observation.|
|person_id|Yes|integer|A foreign key identifier to the Person about whom the observation was recorded. The demographic details of that Person are stored in the PERSON table.| |person_id|Yes|integer|A foreign key identifier to the Person about whom the observation was recorded. The demographic details of that Person are stored in the PERSON table.|
|observation_concept_id|Yes|integer|A foreign key to the standard observation concept identifier in the Standardized Vocabularies.| |observation_concept_id|Yes|integer|A foreign key to the standard observation concept identifier in the Standardized Vocabularies.|
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|qualifier_source_value|No|varchar(50)|The source value associated with a qualifier to characterize the observation| |qualifier_source_value|No|varchar(50)|The source value associated with a qualifier to characterize the observation|
### Conventions ### Conventions
* Observations differ from Measurements in that they do not require a standardized test or some other activity to generate clinical fact. Typical observations are medical history, family history, the stated need for certain treatment, social circumstances, lifestyle choices, healthcare utilization patterns, etc. If the generation clinical facts requires a standardized testing such as lab testing or imaging and leads to a standardized result, the data item is recorded in the MEASUREMENT table. If the clinical fact observed determines a sign, symptom, diagnosis of a disease or other medical condition, it is recorded in the CONDITION_OCCURRENCE table. * Observations differ from Measurements in that they do not require a standardized test or some other activity to generate clinical fact. Typical observations are medical history, family history, the stated need for certain treatment, social circumstances, lifestyle choices, healthcare utilization patterns, etc. If the generation clinical facts requires a standardized testing such as lab testing or imaging and leads to a standardized result, the data item is recorded in the MEASUREMENT table. If the clinical fact observed determines a sign, symptom, diagnosis of a disease or other medical condition, it is recorded in the CONDITION_OCCURRENCE table.
* Valid Observation Concepts are not enforced to be from any domain. They still should be Standard Concepts, and they typically belong to the "Observation" or sometimes "Measurement" domain. * Valid Observation Concepts are not enforced to be from any domain. They still should be Standard Concepts, and they typically belong to the "Observation" or sometimes "Measurement" domain.
* Observation can be stored as attribute value pairs, with the attribute as the Observation Concept and the value representing the clinical fact. This fact can be a Concept (stored in value_as_concept), a numerical value (value_as_number) or a verbatim string (value_as_string). Even though Observations do not have an explicit result, the clinical fact can be stated separately from the type of Observation in the value_as_ fields. * Observation can be stored as attribute value pairs, with the attribute as the Observation Concept and the value representing the clinical fact. This fact can be a Concept (stored in value_as_concept), a numerical value (value_as_number) or a verbatim string (value_as_string). Even though Observations do not have an explicit result, the clinical fact can be stated separately from the type of Observation in the value_as_ fields.