NHS Wales hospital datasets

Last modified: 18 Jul 2024

Introduction

The NHS Wales hospital datasets comprise the Outpatients Database for Wales (OPDW), Patient Episode Datasets for Wales (PEDW), Critical Care Datasets (CCDS), Emergency Department datasets (EDDS) and the Intensive care case mix and activity (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)

Name in TRE	Full name	Domain	From	Until	Data available in TRE1
OPDW	Outpatients Database for Wales	Outpatients	01/04/2004	Ongoing	TBC
PEDW	Patient Episode Datasets for Wales	Inpatients	01/04/1995	Ongoing	TBC
CCDS	Critical Care Datasets	Critical care	01/01/2007	Ongoing	TBC
EDDS	Emergency Department datasets	A & E patients	01/04/2009	Ongoing	TBC
ICNC	Intensive care case mix and activity	Intensive care	01/05/2008	Ongoing	TBC

¹As documented in the data sharing agreement.

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

Background

Production of hospital datasets for research purposes