Read NHS Data Migration mapping tables into R

Reads the clinically assured Read V2 and CTV3 to SNOMED CT mapping tables from the NHS Data Migration release.

Usage

read_nhs_data_migration(
  path,
  tables = c("ctv3sctmap2", "rcsctmap2"),
  version = NULL,
  source =
    "https://isd.digital.nhs.uk/trud/users/guest/filters/0/categories/9/items/9/releases"
)

Arguments

path

Path to the NHS Data Migration release. Can be:

• A zip file (e.g., from get_nhs_data_migration())

• An unzipped directory containing the Mapping Tables subdirectory

tables

Character vector of table names to read. Available tables:

• "ctv3sctmap2" — CTV3 (Read 3) to SNOMED CT clinically assured mapping

• "rcsctmap2" — Read V2 to SNOMED CT clinically assured mapping

By default, both tables are read.

version

Character string for the version label. If NULL (default), derived from the zip file or directory name.

source

Character string for the data source URL or description.

Value

A named list with elements corresponding to requested tables, each containing:

• mapping: a list with table (data.table) and metadata (list)

See also

add_nhs_data_migration(), get_nhs_data_migration()

Examples

if (FALSE) { # \dontrun{
path <- get_nhs_data_migration()
result <- read_nhs_data_migration(path)
result$ctv3sctmap2$mapping$table
result$rcsctmap2$mapping$table
} # }