Create Concept Sets using descendants
Last updated
Last updated
Standard and some non-standard codes are grouped into hierarchies. More specific codes in the hierarchy are called descendants.
In Atlas, both standard codes and some non-standard codes are grouped into hierarchies. You can define a Concept Set using the descendants of standard and some non-standard codes. If you are using non-standard codes with no hierarchies, you must first find equivalent standard codes, because non-standard codes that are not grouped into hierarchies will not have descendants.
When you define a Concept Set, you can include standard and some non-standard code descendants if you wish to include all more specific codes in the hierarchy.
In the example below, we have defined a Concept Set named asthma_standard[MN] using standard codes for Asthma and Allergic asthma.
Only two concepts are currently selected (see the number 2 in the Included Concepts tab)
To include the descendants of standard codes, click the Descendants check box on the right. In this example, we have included the descendants for both standard codes.
You can include descendants separately for each standard code, or you can select descendants for all standard codes by clicking the Descendants check box on the header line.
After selecting the descendants for both standard codes, we have now selected 116 concepts (see the number 116 in the Included Concepts tab):
In the example below, we have defined a Concept Set named asthma_nonstandard[SP] using ICD10 non-standard code J45 for Asthma and Allergic asthma.
Only one concept is currently selected (see the number 1 in the Included Concepts tab)
To include the descendants of standard codes, click the Descendants check box on the right. In this example, we have included the descendants for the non-standard codes.
After selecting the descendants for the non-standard code, we have now selected 5 concepts (see the number 5 in the Included Concepts tab):
In the Included Concepts page, you can see the:
record count: (RC): number of records with the standard code in the Concept Set
descendant record counts (DRC): number of records, including descendants, with the standard code in the Concept Set
The Concept Set in this example is further modified in the following sections:
