documentation:cdm:cohort_definition
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documentation:cdm:cohort_definition [2014/11/17 18:43] cgreich |
documentation:cdm:cohort_definition [2017/08/17 15:21] clairblacketer |
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| ===== COHORT_DEFINITION table ===== | ===== COHORT_DEFINITION table ===== | ||
| + | **The CDM documentation is now being housed on [[https://github.com/OHDSI/CommonDataModel/wiki|github]]. The most recent release is [[https://github.com/OHDSI/CommonDataModel/releases/tag/v5.2.-bugfix.1|v5.2]]** | ||
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| The COHORT_DEFINITION table contains records defining a Cohort derived from the data through the associated description and syntax and upon instantiation (execution of the algorithm) placed into the COHORT table. Cohorts are a set of subjects that satisfy a given combination of inclusion criteria for a duration of time. The COHORT_DEFINITION table provides a standardized structure for maintaining the rules governing the inclusion of a subject into a cohort, and can store operational programming code to instantiate the cohort within the OMOP Common Data Model. | The COHORT_DEFINITION table contains records defining a Cohort derived from the data through the associated description and syntax and upon instantiation (execution of the algorithm) placed into the COHORT table. Cohorts are a set of subjects that satisfy a given combination of inclusion criteria for a duration of time. The COHORT_DEFINITION table provides a standardized structure for maintaining the rules governing the inclusion of a subject into a cohort, and can store operational programming code to instantiate the cohort within the OMOP Common Data Model. | ||
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| |cohort_definition_name|Yes|varchar(255)|A short description of the Cohort.| | |cohort_definition_name|Yes|varchar(255)|A short description of the Cohort.| | ||
| |cohort_definition_description|No|CLOB|A complete description of the Cohort definition| | |cohort_definition_description|No|CLOB|A complete description of the Cohort definition| | ||
| - | |definition_type_concept_id|Yes|integer|Type to define what kind of Cohort definition the record represents and how the syntax may be executed| | + | |definition_type_concept_id|Yes|integer|Type defining what kind of Cohort Definition the record represents and how the syntax may be executed| |
| - | |cohort_definition_syntax|No|CLOB|Syntax to operationalize the Cohort definition| | + | |cohort_definition_syntax|No|CLOB|Syntax or code to operationalize the Cohort definition| |
| - | |subject_concept_id|Yes|integer|A foreign key to the Concept to which defines the domain of subjects that are members of the cohort (e.g., person, provider, visit).| | + | |subject_concept_id|Yes|integer|A foreign key to the Concept to which defines the domain of subjects that are members of the cohort (e.g., Person, Provider, Visit).| |
| |cohort_instantiation_date|No|Date|A date to indicate when the Cohort was instantiated in the COHORT table| | |cohort_instantiation_date|No|Date|A date to indicate when the Cohort was instantiated in the COHORT table| | ||
| ==== Conventions ==== | ==== Conventions ==== | ||
| - | * The cohort_definition_syntax does not prescribe the used syntax. Typically, it would be any flavor SQL, a cohort definition language, or a free-text description of the algorithm. | + | * The cohort_definition_syntax does not prescribe any specific syntax or programming language. Typically, it would be any flavor SQL, a cohort definition language, or a free-text description of the algorithm. |
| * The subject_concept_id determines what the individual subjects or entities of the Cohort consists of. In most cases, that would be a Person (patient). But cohorts could also be constructed for Providers, Visits or any other Domain. Note that the Domain is not codified using the alphanumerical domain_id like in the CONCEPT table. Instead, the corresponding Concept is used. The Concepts for each domain can be obtained from the DOMAIN table in the domain_concept_id. | * The subject_concept_id determines what the individual subjects or entities of the Cohort consists of. In most cases, that would be a Person (patient). But cohorts could also be constructed for Providers, Visits or any other Domain. Note that the Domain is not codified using the alphanumerical domain_id like in the CONCEPT table. Instead, the corresponding Concept is used. The Concepts for each domain can be obtained from the DOMAIN table in the domain_concept_id. | ||
| - | ~~DISQUS~~ | ||
documentation/cdm/cohort_definition.txt · Last modified: 2017/09/25 14:59 by clairblacketer
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