TY - JOUR
AU - J. V. E. Brown
AU - C. Carswell
AU - D. Podmore
AU - I. Featherstone
AU - S. Alderson
AU - J. R. Böhnke
AU - T. Doran
AU - M. Hadjiconstantinou
AU - C. E. Hewitt
AU - R. I. G. Holt
AU - R. Jacobs
AU - V. Johnson
AU - I. Kellar
AU - J. Li
AU - D. P. Osborn
AU - G. Russell
AU - J. Watson
AU - N. Siddiqi
AU - P. A. Coventry
A1 - 
AB - Diabetes self-management is critical for improving health outcomes, but people with severe mental illness (SMI) face additional barriers that complicate effective engagement with self-management behaviours and with existing diabetes services. This feasibility study assessed the acceptability and feasibility of the DIAMONDS intervention, a tailored type 2 diabetes (T2D) self-management programme designed for people with SMI and delivered by trained coaches over 16 weekly sessions, in preparation for a future randomised controlled trial (RCT). Thirty participants with both T2D and SMI were recruited, and 29 were included in the study. The thresholds for participant recruitment and retention for progression to the RCT were met. Twenty-three participants (66%) attended at least one intervention session. Consistent weekly participation proved challenging, with only 15 participants (52%) attending eight or more (50%+) sessions. However, the intervention was acceptable to both participants and coaches, as indicated by coach session logs. High completion rates were observed for self-reported measures, while physical health data and data from primary care records had some omissions, prompting refinements in data collection for the RCT. This study highlights the feasibility and acceptability of delivering an evaluation of a structured diabetes self-management intervention in people with SMI. Some modifications to study processes will be required before moving to the main RCT, including adjustments to intervention delivery (including more flexibility in the timing of intervention sessions and coach training to improve confidence in supporting the use of a mobile app), data collection processes, and intervention fidelity assessment for the RCT, to enhance adherence and accommodating the complex needs of this population. This study represents an important step towards the development and robust evaluation of a self-management intervention to improve diabetes outcomes for people with SMI, addressing a significant gap in health equity. CLINICAL TRIAL REGISTRATION: https://www.isrctn.com/ISRCTN15328700, ISRCTN 15328700.
AD - Department of Health Sciences, University of York, York, United Kingdom.; Leeds Institute of Health Sciences, University of Leeds, Leeds, United Kingdom.; School of Health Sciences, University of Dundee, Dundee, United Kingdom.; Diabetes Research Centre, College of Life Sciences, University of Leicester, Leicester, United Kingdom.; NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, United Kingdom.; Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.; National Institute for Health Research Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.; Centre for Health Economics, University of York, York, United Kingdom.; Leicester Diabetes Centre, University Hospitals of Leicester NHS Trust, Leicester, United Kingdom.; School of Psychology, University of Sheffield, Sheffield, United Kingdom.; Division of Psychiatry, University College London, London, United Kingdom.; North London NHS Foundation Trust, London, United Kingdom.; Bradford District Care NHS Foundation Trust, Bradford, United Kingdom.; Hull York Medical School, York, United Kingdom.; School of Nursing and Public Health, Manchester Metropolitan University, Manchester, United Kingdom.
AN - 41384267
BT - Front Health Serv
C5 - Healthcare Disparities
DO - 10.3389/frhs.2025.1688787
DP - NLM
ET - 20251126
JF - Front Health Serv
LA - eng
N2 - Diabetes self-management is critical for improving health outcomes, but people with severe mental illness (SMI) face additional barriers that complicate effective engagement with self-management behaviours and with existing diabetes services. This feasibility study assessed the acceptability and feasibility of the DIAMONDS intervention, a tailored type 2 diabetes (T2D) self-management programme designed for people with SMI and delivered by trained coaches over 16 weekly sessions, in preparation for a future randomised controlled trial (RCT). Thirty participants with both T2D and SMI were recruited, and 29 were included in the study. The thresholds for participant recruitment and retention for progression to the RCT were met. Twenty-three participants (66%) attended at least one intervention session. Consistent weekly participation proved challenging, with only 15 participants (52%) attending eight or more (50%+) sessions. However, the intervention was acceptable to both participants and coaches, as indicated by coach session logs. High completion rates were observed for self-reported measures, while physical health data and data from primary care records had some omissions, prompting refinements in data collection for the RCT. This study highlights the feasibility and acceptability of delivering an evaluation of a structured diabetes self-management intervention in people with SMI. Some modifications to study processes will be required before moving to the main RCT, including adjustments to intervention delivery (including more flexibility in the timing of intervention sessions and coach training to improve confidence in supporting the use of a mobile app), data collection processes, and intervention fidelity assessment for the RCT, to enhance adherence and accommodating the complex needs of this population. This study represents an important step towards the development and robust evaluation of a self-management intervention to improve diabetes outcomes for people with SMI, addressing a significant gap in health equity. CLINICAL TRIAL REGISTRATION: https://www.isrctn.com/ISRCTN15328700, ISRCTN 15328700.
PY - 2025
SN - 2813-0146
SP - 1688787
ST - The DIAMONDS intervention for type 2 diabetes for people with severe mental illness: findings from a single-group feasibility study
T1 - The DIAMONDS intervention for type 2 diabetes for people with severe mental illness: findings from a single-group feasibility study
T2 - Front Health Serv
TI - The DIAMONDS intervention for type 2 diabetes for people with severe mental illness: findings from a single-group feasibility study
U1 - Healthcare Disparities
U3 - 10.3389/frhs.2025.1688787
VL - 5
VO - 2813-0146
Y1 - 2025
ER -