Emergency Department Data Set

Health & Wellbeing

Digital Health and Care Wales

Administrative (mandatory) data return


Individual person

Approx. 750,000 attendances per year

01/04/2009 - 01/03/2022


Administrative and clinical information for all NHS Wales Accident and Emergency department attendances. Includes the All Wales Injury Surveillance Systems (AWISS) dataset. Data recording practices may vary, especially in some of the minor A&E and Minor Injury Units which could account for some local differences.

The data are collected and coded at each hospital.