Versioned CDISC SDTM Controlled Terminology from the NCI EVS FTP site.
Uses a validity-date design: one row per unique term-state across all
versions. A term is "current" when valid_to is NA.
Format
A data frame with columns:
- codelist_code
NCI C-code for the codelist, e.g.
"C66731".- codelist_name
Submission value for the codelist, e.g.
"SEX".- codelist_label
Long name, e.g.
"Sex".- extensible
Logical; whether sponsor extensions are allowed.
- term_code
NCI C-code for the term, e.g.
"C16576".NAfor codelist-level rows.- term
Submission value, e.g.
"F".NAfor codelist-level rows.- decoded_value
NCI preferred term / decoded value, e.g.
"Female".- synonyms
Pipe-separated synonyms.
- definition
NCI definition text.
- valid_from
Date of the first CT release in which this row's content appeared.
- valid_to
Date of the last CT release in which this row's content was present;
NAif still current.