The National Health Service (NHS) England Technology Reference data Update Distribution (TRUD) enables programmatic access to retrieve metadata for and download NHS TRUD release items. The trud package wraps this API, facilitating programmatic retrieval and updating of NHS TRUD resources:
Having installed trud, you will also need to:
- Sign up for a free account with NHS TRUD
- Set your API key (shown on your account information page) as an
environmental variable named
TRUD_API_KEY. The best way to do this is by placing your API key in a.Renvironfile. For example, create or edit your project.Renvironfile withusethis::edit_r_environ(), then populate as follows (replacinge963cc518cc41500e1a8940a93ffc3c0915e2983with your own API key):
TRUD_API_KEY=e963cc518cc41500e1a8940a93ffc3c0915e2983Examples
Retrieve available item endpoints
trud_items()
#> # A tibble: 73 × 2
#> item_number item_name
#> <int> <chr>
#> 1 246 Cancer Outcomes and Services Data Set XML Schema
#> 2 245 Commissioning Data Set XML Schema
#> 3 599 Community Services Data Set Intermediate Database
#> 4 393 Community Services Data Set post-deadline extract XML Schema
#> 5 394 Community Services Data Set pre-deadline extract XML Schema
#> 6 391 Community Services Data Set XML Schema
#> 7 248 Diagnostic Imaging Data Set XML Schema
#> 8 239 dm+d XML transformation tool
#> 9 1859 Electronic Prescribing and Medicines Administration Data Sets XM…
#> 10 1819 Emergency Care Data Set XML Schema
#> # ℹ 63 more rowsNote that item numbers can also be found in the URLs of releases pages, between
itemsandreleases. For example, the URL for the Community Services Data Set pre-deadline extract XML Schema releases page ishttps://isd.digital.nhs.uk/trud/users/guest/filters/0/categories/1/items/394/releasesand the item number is394.
Get metadata for an item
get_item_metadata(394) |>
purrr::map_at("releases", \(release) purrr::map(release, names))
#> $apiVersion
#> [1] "1"
#>
#> $releases
#> $releases$CSDS_Provpredextract_1.6.6_20221115000001.zip
#> [1] "id" "name"
#> [3] "releaseDate" "archiveFileUrl"
#> [5] "archiveFileName" "archiveFileSizeBytes"
#> [7] "archiveFileSha256" "archiveFileLastModifiedTimestamp"
#> [9] "checksumFileUrl" "checksumFileName"
#> [11] "checksumFileSizeBytes" "checksumFileLastModifiedTimestamp"
#> [13] "signatureFileUrl" "signatureFileName"
#> [15] "signatureFileSizeBytes" "signatureFileLastModifiedTimestamp"
#> [17] "publicKeyFileUrl" "publicKeyFileName"
#> [19] "publicKeyFileSizeBytes" "publicKeyId"
#>
#> $releases$DMDSSCHEMAS_1.5.21_20200805000001
#> [1] "id" "name"
#> [3] "releaseDate" "archiveFileUrl"
#> [5] "archiveFileName" "archiveFileSizeBytes"
#> [7] "archiveFileSha256" "archiveFileLastModifiedTimestamp"
#> [9] "checksumFileUrl" "checksumFileName"
#> [11] "checksumFileSizeBytes" "checksumFileLastModifiedTimestamp"
#> [13] "signatureFileUrl" "signatureFileName"
#> [15] "signatureFileSizeBytes" "signatureFileLastModifiedTimestamp"
#> [17] "publicKeyFileUrl" "publicKeyFileName"
#> [19] "publicKeyFileSizeBytes" "publicKeyId"
#>
#>
#> $httpStatus
#> [1] 200
#>
#> $message
#> [1] "OK"Get metadata for all subscribed items
get_subscribed_metadata()
#> ■■■■■■■■ 22% | ETA: 10s
#> ■■■■■■■■■■■■■■ 44% | ETA: 7s
#> ■■■■■■■■■■■■■■■■■■■■■ 66% | ETA: 5s
#> ■■■■■■■■■■■■■■■■■■■■■■■■■■■ 86% | ETA: 2s
#> # A tibble: 17 × 3
#> item_number item_name metadata
#> <int> <chr> <list>
#> 1 394 Community Services Data Set pre-deadline extract XM… <named list>
#> 2 239 dm+d XML transformation tool <named list>
#> 3 263 eViewer application <named list>
#> 4 398 Global Trade Item Number to OPCS-4 code cross refer… <named list>
#> 5 1760 NHS Continuing Health Care (CHC) Data Set - JSON Sc… <named list>
#> 6 719 NHS Continuing Health Care (CHC) Data Set - XML Sch… <named list>
#> 7 9 NHS Data Migration <named list>
#> 8 258 NHS ICD-10 5th Edition data files <named list>
#> 9 8 NHS Read Browser <named list>
#> 10 19 NHS UK Read Codes Clinical Terms Version 3 <named list>
#> 11 255 NHS UK Read Codes Clinical Terms Version 3, Cross M… <named list>
#> 12 24 NHSBSA dm+d <named list>
#> 13 264 OPCS-4 eVersion book <named list>
#> 14 659 Primary Care Domain reference sets <named list>
#> 15 101 SNOMED CT UK Clinical Edition, RF2: Full, Snapshot … <named list>
#> 16 98 SNOMED CT UK Data Migration Workbench <named list>
#> 17 1799 SNOMED CT UK Monolith Edition, RF2: Snapshot <named list>Download an item
# by default the latest release will be downloaded to the current working directory
x <- download_item(394, directory = tempdir())
#> ⠙ Downloading archive file for TRUD item 394...
#> ✔ Successfully downloaded `CSDS_Provpredextract_1.6.6_20221115000001.zip` to /t…
#>
unzip(x, list = TRUE)
#> Name Length
#> 1 CSDS_ProvPreExtract__V1_6_6_SAMPLE_XML.xml 7887
#> 2 CSDS_ProvPreExtract__V1_6_6_FinalV1.XSD 75650
#> 3 CSDS ProvPreDExtract v1.6.6 Production Log v0.1.xlsx 32216
#> Date
#> 1 2022-11-15 12:48:00
#> 2 2022-10-31 11:36:00
#> 3 2022-11-15 11:57:00