is_code() and is_term() evaluate whether query codes or terms are part of
the SDTM controlled terminology within the context of a codelist.
Arguments
- term
A character vector of terms (e.g.
"TENMW102").- codelist
A character vector of codes referring to SDTM terminology codelists (e.g.
"C141657").- code
A character vector of C-codes (e.g.
"C174106").
Value
A logical vector, where TRUE indicates that term is a
controlled terminology term within the codelist provided, and FALSE,
otherwise.
Examples
is_term(term = "TENMW101", codelist = "C141657")
#> [1] TRUE
# Note that the codelist term itself (`"TENMW1TC"`) is not part of its own
# codelist (`"C141657"`).
is_term(term = "TENMW1TC", codelist = "C141657")
#> [1] FALSE
# `is_term()` is vectorized over `term` and `codelist`
is_term(term = c("TENMW101", "TENMW104"), codelist = "C141657")
#> [1] TRUE TRUE
is_code(code = "C174106", codelist = "C141657")
#> [1] TRUE
# Note that the codelist code itself (`"C141657"`) is not part of its own
# codelist (`"C141657"`).
is_code(code = "C141657", codelist = "C141657")
#> [1] FALSE
# `is_code()` is vectorized over `code` and `codelist`
is_code(code = c("C174106", "C141701"), codelist = "C141657")
#> [1] TRUE TRUE