documentation:vocabulary:changes_from_version_4
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Last revision Both sides next revision | ||
|
documentation:vocabulary:changes_from_version_4 [2015/01/20 01:55] cgreich |
documentation:vocabulary:changes_from_version_4 [2015/01/20 03:11] cgreich |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ===== Changes from Vocabulary Version 4.0 ===== | ===== Changes from Vocabulary Version 4.0 ===== | ||
| The Standardized Vocabularies are undergoing a constant revision and improvement. Therefore, only significant structural changes are listed in the following. | The Standardized Vocabularies are undergoing a constant revision and improvement. Therefore, only significant structural changes are listed in the following. | ||
| + | |||
| + | ** Changes to Conventions ** | ||
| + | * Concept Designation as Standard, Classification and Source | ||
| + | * **Source Concepts**: In contrast to V4.0 of the Standardized Vocabularies, there is no longer a distinction between source codes and Concepts. All source codes now have their own Concept. However, in order to distinguish between codes that are used to represent a clinical entity in the data tables, Concepts are now designated Standard Concepts or Source Concepts. | ||
| + | * For some vocabularies, source codes did have records in the Concept table, such as VA Product, RxNorm Concept Classes "Drug Form", SNOMED Concepts other than Condition and Procedure. These Concept had a concept_level = 0. The concept_id of these non-standard Concepts has been preserved between the versions. | ||
| + | * **Standard Concepts**: These Concepts were available in previous versions of the Standardized Vocabularies. They were designated through a concept_level value greater than 0. The concept_id of Standard Concepts has been preserved between the versions. | ||
| + | * **Classification Concepts**: Like the Standard Concepts, the Classification Concepts existed in V4.0 of the Standardized Vocabulary. Their concept_level was typically 3 for drug classifications, 1-5 for MedDRA (Condition Classification) and 1-2 for SNOMED Procedure Classifications. Their concept_id has been preserved as well. | ||
| + | |||
| + | * Mapping between source and Standard Concepts. | ||
| + | * Each source code has now a representation as a Source Concept, and the mapping is achieved through the [[documentation:cdm:concept_relationship|CONCEPT_RELATIONSHIP]] table. A new relationship_id = "Maps to" (reverse_relationship_id = "Mapped from") links the Source to the Standard Concepts. | ||
| + | * The [[documentation:cdm:source_to_concept_map|SOURCE_TO_CONCEPT_MAP]] table is no longer used, and therefore no longer populated in the Standardized Vocabularies. However, it still can be used to map local source codes for specific ETL procedures using non-public vocabularies not supported here. | ||
| + | |||
| ** Changes to Tables ** | ** Changes to Tables ** | ||
documentation/vocabulary/changes_from_version_4.txt ยท Last modified: 2015/01/20 03:13 by cgreich
Page Tools
