createTransitive

Returns a data.table containing ancestor / descendant relationships
which can be used in ancestors and descendants functions

Functions and methods for manipulating 'SNOMED CT'
concepts. The package contains functions for loading the 'SNOMED CT'
release into a convenient R environment, selecting 'SNOMED CT'
concepts using regular expressions, and navigating the 'SNOMED CT'
ontology. It provides the 'SNOMEDconcept' S3 class for a vector of
'SNOMED CT' concepts (stored as 64-bit integers) and the
'SNOMEDcodelist' S3 class for a table of concepts IDs with
descriptions. The package can be used to construct sets of
'SNOMED CT' concepts for research (<doi:10.1093/jamia/ocac158>).
For more information about 'SNOMED CT' visit
<https://www.snomed.org/>.

Anoop Shah

Rdiagnosislist

Manipulate SNOMED CT Diagnosis Lists

createTransitive function

<dl><dt>conceptIds</dt>
<dd>character or integer64 vector of SNOMED concept IDs
for the subset of concepts to include in the transitive table.</dd>
<dt>SNOMED</dt>
<dd>environment containing a SNOMED dictionary</dd>
<dt>tables</dt>
<dd>vector of names of relationship table(s) to use;
by default use both RELATIONSHIP and STATEDRELATIONSHIP</dd></dl>

Arguments

Create a transitive closure table for is-a relationships for
faster ancestor / descendant lookups — createTransitive

<dl>

<dt>conceptIds</dt>
<dd>character or integer64 vector of SNOMED concept IDs
for the subset of concepts to include in the transitive table.</dd>


<dt>SNOMED</dt>
<dd>environment containing a SNOMED dictionary</dd>


<dt>tables</dt>
<dd>vector of names of relationship table(s) to use;
by default use both RELATIONSHIP and STATEDRELATIONSHIP</dd>

</dl>

createTransitive: Create a transitive closure table for is-a relationships for faster ancestor / descendant lookups

Description

Usage

Arguments

See Also

Examples