Introduction#

The NHS Wales hospital datasets comprise the Outpatients Database for Wales (OPDW), Patient Episode Dataset for Wales (PEDW), Critical Care Dataset (CCDS), Emergency Department Dataset (EDDS) and the Intensive Care National Audit and Research Centre (ICNC). The hospital datasets do not include all mental health or maternity-specific hospital activity.

OPCS, ICD-10, NHS National and NHS Wales National codes are used in the OPDW and PEDW datasets. See the Coded variables guide for further details.

Coverage of hospital datasets#

The hospital datasets cover inpatient admissions, outpatient appointments, critical care, Intensive care and accident & emergency attendances at hospitals in Wales.

The hospital datasets include private patients treated in NHSW hospitals and care delivered by English Trusts.
The hospital datasets were linked either by NHS number or a combination of alternative patient identifiable fields; all five hospital datasets will be available in the UK LLC TRE.

Table 1 Names, temporal coverage and availability of hospital datasets in the UK LLC TRE (the datasets in italics are retired)

¹As documented in the data sharing agreement.

For further details see the NHS Wales Hospital Activity and NHS Wales Data Quality Standards webpages.

Background#