get_llt_soc: Extract low level terms from soc classification

In vigicaen: 'VigiBase' Pharmacovigilance Database Toolbox

Extract low level terms from soc classification

Description

Collect llt codes from a meddra data.table, given another term of the MedDRA SOC Hierarchy.

Usage

get_llt_soc(
  term_sel,
  term_level = c("soc", "hlgt", "hlt", "pt", "llt"),
  meddra,
  verbose = TRUE
)

Arguments

term_sel	A named list of character vector(s). The terms to extract llts codes from. See details.
term_level	A character string. One of "soc", "hlgt", "hlt", "pt", or "llt"
meddra	A data.table. Built from meddra_builders functions
verbose	Logical. Allows you to see matching reactions in the console.

Details

get_llt_soc() is an ID collector function. The function extracts low level term codes. get_llt_soc() is case-sensitive, and MedDRA terms always begin with a capital letter, in their native version. In term_sel, all terms should come from the same hierarchical level, e.g. all preferred terms, all high level terms, etc.

Value

A named list of integers. Low-level term codes.

See Also

get_llt_smq()

Examples

## Finding llt codes for colitis

pt_sel <- rlang::list2(
  colitis = c("Colitis",
              "Autoimmune colitis"),
  pneumonitis = c("Pneumonitis",
                  "Organising pneumonia")
  )

hlt_sel <- rlang::list2(
  colitis = c("Gastrointestinal inflammatory disorders NEC"),
  pneumonitis = c("Pulmonary thrombotic and embolic conditions")
  )

# Remember you can use more than one term to define each adverse reaction,
# but they should all be at the same hierarchical level in meddra.

# with preferred terms

get_llt_soc(
  term_sel = pt_sel,
  term_level = "pt",
  meddra = meddra_
  )

# with high level terms

get_llt_soc(
  term_sel = hlt_sel,
  term_level = "hlt",
  meddra = meddra_
  )

vigicaen documentation built on April 3, 2025, 8:55 p.m.