Get descendant codes for a given concept

Usage

getDescendants(cdm, conceptId, withAncestor = FALSE)

Arguments

cdm: A cdm reference to an OMOP CDM dataset. If data is held within a database, the vocabulary tables should be in the same schema as the clinical tables (person, observation period, and so on).
conceptId: concept_id to search
withAncestor: If TRUE, return column with ancestor. In case of multiple ancestors, concepts will be separated by ";".

Value

The descendants of a given concept id.

Examples

# \donttest{
library(CodelistGenerator)
cdm <- mockVocabRef()
getDescendants(cdm = cdm, conceptId = 1)
#> # A tibble: 5 × 10
#>   concept_id concept_name             domain_id vocabulary_id standard_concept
#>        <int> <chr>                    <chr>     <chr>         <chr>           
#> 1          1 Musculoskeletal disorder Condition SNOMED        S               
#> 2          2 Osteoarthrosis           Condition SNOMED        S               
#> 3          3 Arthritis                Condition SNOMED        S               
#> 4          4 Osteoarthritis of knee   Condition SNOMED        S               
#> 5          5 Osteoarthritis of hip    Condition SNOMED        S               
#> # ℹ 5 more variables: concept_class_id <chr>, concept_code <chr>,
#> #   valid_start_date <date>, valid_end_date <date>, invalid_reason <chr>
# }