Michael, Agnieszka https://orcid.org/0000-0002-7262-6227
Huynh, Jennie
Sutton, Katie
Chow, Man-Chie
Ford, Elizabeth
Mansi, Janine https://orcid.org/0000-0002-6229-3051
Selby, Peter
Skene, Simon https://orcid.org/0000-0002-7828-3122
Armes, Jo
Funding for this research was provided by:
DH | NIHR | Research for Patient Benefit Programme (NIHR200517)
Article History
Received: 28 July 2025
Revised: 21 January 2026
Accepted: 10 March 2026
First Online: 10 April 2026
Competing interests
: The authors declare no competing interests. The corresponding author received grant funding as well as educational grants from the following: EUSA Pharma, GSK, Ipsen, MERCK, MSD.
: The study was approved by the Wales Research Ethics Committee 6 on 1 December 2020, REC reference: [ ] /WA/0284; IRAS project ID: 279324; The study was approved by Public Health England Office for Data Release ODR1819_308. Consent from participants was sought for qualitative study, published, reference: Sutton K, Armes J, Skene SS, et al. The Perceptions of Patients, Carers and Clinicians Relating to SACT Decision-Making in Older People With Cancer: Qualitative Findings From the Electronic Frailty Index (eFI) in Cancer Study. European Journal of Cancer . The released data from PHE was de-identified and individual patient consent was not required. The study was performed in accordance with the Declaration of Helsinki.