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Article History

Received: 15 September 2022

Accepted: 20 February 2023

First Online: 24 March 2023

Declarations

:

: The study received Health Research Authority (HRA, England) and Health and Care Research Wales (HCRW) approval (REC reference: 20/NW/0259); study co-sponsors: King’s College Hospital NHS Foundation Trust and King’s College London, registered ISRCTN 16561225. The data collection took place in accordance with the Control of Patient Information (COPI) regulation published by the Department of Health and Social Care where healthcare organisations, GPs, local authorities and arm's length bodies were notified that they should share information to support efforts against coronavirus (COVID-19). COPI notice was published by the Department of Health and Social Care: Coronavirus (COVID-19): notice under regulation 3(4) of the Health Service (Control of Patient Information) Regulations 2002—general. 2020 (updated 2022). local In addition to HRA approval, research governance approvals for NHS sites with associated capability and capacity assessments were obtained.

: Not applicable.

: Due to ethical concerns, supporting data cannot be made openly available. Please contact the senior author and the Chief Investigator of the study Professor Irene J Higginson (irene.higginson@kcl.ac.uk) for further information about the data and conditions for access.

: There are no competing interests.