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change example for 'Content of each table'

Anna Ostropolets 2018-07-19 16:52:31 +03:00
parent 51d452e4fa
commit 777ff6078b
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Background/Data-Model-Conventions.md

@ -22,7 +22,7 @@ Notation|Description
In CDM data tables the meaning of the content of each record is represented using Concepts. Concepts are stored with their concept_id as foreign keys to the CONCEPT table in the Standardized Vocabularies, which contains Concepts necessary to describe the healthcare experience of a patient. If a Standard Concept does not exist or cannot be identified, the Concept with the concept_id 0 is used, representing a non-existing or unmappable concept.
Records in the CONCEPT table contain all the detailed information about it (name, relationships, types etc.). Concepts, Concept Relationships and other information relating to Concepts contained in the tables of the Standardized Vocabularies..
Records in the CONCEPT table contain all the detailed information about it (name, relationships, types etc.). Concepts, Concept Relationships and other information relating to Concepts contained in the tables of the Standardized Vocabularies.
### Difference between Concept IDs and Source Values
@ -45,7 +45,7 @@ Data tables for clinical data contain a date stamp (ending in _date, _start_date
### Content of each table
For the tables of the main domains of the CDM it is imperative that used concepts are strictly limited to the domain. For example, the CONDITION_OCCURRENCE table contains only information about conditions (diagnoses, signs, symptoms), but no information about procedures. Not all source coding schemes adhere to such rules. For example, ICD-9-CM codes, which contain mostly diagnoses of human disease, also contain information about the status of patients having received a procedure: V25.5 "Encounter for insertion of implantable subdermal contraceptive" defines a procedure and is therefore stored in the PROCEDURE_OCCURRENCE table.
For the tables of the main domains of the CDM it is imperative that used concepts are strictly limited to the domain. For example, the CONDITION_OCCURRENCE table contains only information about conditions (diagnoses, signs, symptoms), but no information about procedures. Not all source coding schemes adhere to such rules. For example, ICD-9-CM codes, which contain mostly diagnoses of human disease, also contain information about the status of patients having received a procedure: V20.3 "Newborn health supervision" defines a continuous procedure and is therefore stored in the PROCEDURE_OCCURRENCE table.
### Differentiating between source values, source concept ids, and standard concept ids