This project was led by the Central Evaluation Team at Public Health Wales, in collaboration with Swansea University’s Diabetes Research Group.
Authors: James Bailey1, Charlotte N.B. Grey1, Alisha R. Davies1, Esther Mugweni1, Harvey Carman2, WY Cheung3, Steve Luzio3
1Research and Evaluation Division; Research, Data and Digital Directorate; Public Health Wales
2Primary Care Division; Health and Well-Being Directorate; Public Health Wales
3Diabetes Research Group; Swansea University
ISBN: 978-1-83766-801-4
© 2026 Public Health Wales NHS Trust. Material contained in this document may be reproduced under the terms of the Open Government Licence (OGL) provided it is done so accurately and is not used in a misleading context. Acknowledgement to Public Health Wales NHS Trust to be stated.
We gratefully acknowledge the contributions of the team at Public Health Wales: Nicholas Gregory, Diane Kirkland, Keri Hutchinson, Catherine Washbrook, Amrita Jesurasa and Zoe Wallace. From Swansea University’s Diabetes Research Group, we thank WY Cheung and Steve Luzio for their expertise and input.
The Central Evaluation Team has been established within the Research and Evaluation Division within the Knowledge Directorate at Public Health Wales. The team supports the design and delivery of robust evaluation across PHW and its wider strategic partners.
Special thanks to Aneurin Bevan University Health Board for their instrumental role in developing and testing data collection resources, as well as timely delivery insights, with acknowledgement to Rachel Knowles, Donna Price, and William Beer.
This study makes use of anonymised data held in the Secure Anonymised Information Linkage (SAIL) Databank. We would like to acknowledge all the data providers who make anonymised data available for research (9–13).