documentation:cdm:data_model_conventions
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documentation:cdm:data_model_conventions [2015/01/31 14:35] cgreich [Difference between Concept IDs and Source Values] |
documentation:cdm:data_model_conventions [2017/09/25 14:56] (current) clairblacketer |
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| ====== Data Model Conventions ====== | ====== Data Model Conventions ====== | ||
| + | **THIS IS OUTDATED. All documentation is now on the [[https://github.com/OHDSI/CommonDataModel/wiki|github wiki]]. Please refer there or to the [[projects:workgroups:cdm-wg|CDM working group]] for more information** | ||
| There are a number of implicit and explicit conventions that have been adopted in the CDM. Developers of methods that run methods against the CDM need to understand these conventions. | There are a number of implicit and explicit conventions that have been adopted in the CDM. Developers of methods that run methods against the CDM need to understand these conventions. | ||
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| Many tables contain equivalent information multiple times: As a Source Value, a Source Concept and as a Standard Concept. | Many tables contain equivalent information multiple times: As a Source Value, a Source Concept and as a Standard Concept. | ||
| * Source Values contains the codes from public code systems such as ICD-9-CM, NDC, CPT-4 etc. or local controlled vocabularies (such as F for female and M for male) copied from the source data. Source Values are stored in the _source_value field in the data tables. | * Source Values contains the codes from public code systems such as ICD-9-CM, NDC, CPT-4 etc. or local controlled vocabularies (such as F for female and M for male) copied from the source data. Source Values are stored in the _source_value field in the data tables. | ||
| - | * Concepts are CDM-specific entities that represent the meaning of a clinical fact. Most concepts are based on code systems used in healthcare (called Source Concepts), while others were created de-novo (concept_code = 'OMOP generated'). Concepts have unique IDs across all domains. | + | * Concepts are CDM-specific entities that represent the meaning of a clinical fact. Most concepts are based on code systems used in healthcare (called Source Concepts), while others were created de-novo (concept_code = "OMOP generated"). Concepts have unique IDs across all domains. |
| * Source Concepts are the concepts that represent the code used in the source. Source Concepts are only used for common healthcare code systems, but not for OMOP-generated Concepts. Source Concepts are stored in the source_concept_id field in the data tables. | * Source Concepts are the concepts that represent the code used in the source. Source Concepts are only used for common healthcare code systems, but not for OMOP-generated Concepts. Source Concepts are stored in the source_concept_id field in the data tables. | ||
| * Standard Concepts are those concepts that are used to define the unique meaning of a clinical entity. For each entity there is one Standard Concept. Standard Concepts are typically drawn from existing public vocabulary sources. Concepts that have the equivalent meaning to a Standard Concept are mapped to the Standard Concept. Standard Concepts are referred to in the concept_id field of the data tables. | * Standard Concepts are those concepts that are used to define the unique meaning of a clinical entity. For each entity there is one Standard Concept. Standard Concepts are typically drawn from existing public vocabulary sources. Concepts that have the equivalent meaning to a Standard Concept are mapped to the Standard Concept. Standard Concepts are referred to in the concept_id field of the data tables. | ||
documentation/cdm/data_model_conventions.1422714947.txt.gz ยท Last modified: 2015/01/31 14:35 by cgreich
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