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NCT Number: NCT07193446

Optimising the Delivery of Diabetes Distress Informed Care for Its Prevention, Detection, and Management in Adults With Type 1 Diabetes: a Feasibility Study (D-stress Study)

Up to one in two adults with type 1 diabetes find living with and managing diabetes to be emotionally challenging. This 'emotional side' of diabetes - feeling worried, frustrated, overwhelmed, sad, burnt-out - is called diabetes distress. It affects people's quality of life and can hinder them from managing their diabetes as well as they can.

In the UK, the NHS needs to better understand how to best support people feeling emotionally burdened by diabetes. So, we have worked with diabetes distress specialists around the world to develop an NHS pathway to care for diabetes distress. This pathway to care involves training diabetes teams to recognise, assess and talk about diabetes distress at routine appointments. If people have a high diabetes distress level, they may be able to take part in an online group program to help them manage their type 1 diabetes and emotions. The feasibility study will test this pathway to care with people with type 1 diabetes in the NHS setting.

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Key information

Conditions

Diabetes Type 1 Autoimmune Diseases Diabetes Mellitus Diabetes Mellitus, Type 1 Endocrine System Diseases Glucose Metabolism Disorders Immune System Diseases Metabolic Diseases Nutritional and Metabolic Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Royal United Hospitals Bath, Bath, United Kingdom

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Adults with type 1 diabetes

  • People aged 18 years old and older
  • With a T1DM diagnosis of more than one year
  • Who used a Continuous Glucose Monitoring device 3 months prior to trial entry

Health care professionals

  • Members of the multidisciplinary diabetes team
  • Who would like and be able to undertake training in Enhanced Usual Care (EUC)

Family or friend

  • People aged 18 years or older
  • Is involved with the care of the participant
  • The participant has consented to the family member or friend to be involved in the study

REDUCE Facilitators

  • Eligibility as per the role specification in Section 6.2.2 of study Protocol

Exclusion criteria

Adults with type 1 diabetes

  • Exclusion criteria will include those adults diagnosed less than one year ago. This is because the first 12 months following a diagnosis of T1DM is a period of unique stress due to the diagnosis, the acute onset, and requirement to learn complex new skills. Additionally, due to the honeymoon period, which can typically last up to a year, there is variety in the physiological trajectory which might have an impact that would be difficult to measure and account for in this study(Sokołowska, Chobot et al. 2016).
  • Women who are pregnant. This is because the additional burdens and anxieties this population is confronted with may risk confounding the trial findings
  • Exclusion of adults with current mental health diagnoses with current symptoms (e.g. psychosis or substance abuse or severe depression), will be evaluated and determined on a case-by-case basis by clinical care teams.

Health care professionals • People who are unwilling or unable to take on additional workload associated with D-stress e-learning and delivery of Enhanced Usual Care.

Family or friend

  • Participant with type 1 diabetes has not given consent for a family member or friend to participate in the study

REDUCE Facilitators

  • • Professional accreditation with one of the following professional bodies: Nursing & Midwifery Council, Health & Care Professionals Council, British Association for Counselling & Psychotherapy, and UK Council for Psychotherapy.
  • Professional or personal understanding of Type 1 diabetes
  • Professional or personal understanding of NHS diabetes care and guidelines
  • Professional or personal understanding of diabetes distress
  • Professional understanding of mental and emotional health
  • Professional experience of in-person and/or online group facilitation especially in managing diverse needs within a group and the expression of strong emotions
  • Willingness to be a research participant

Treatment and study plan

D-stress study: The detection, prevention and management of diabetes distress for adults living with type 1 diabetes.

Behavioral

Enhanced Usual Care intervention aims to train health care professionals to detect and prevent, and manage diabetes distress in routine diabetes care, in the UK NHS. The REDUCE programme aims to prevent and manage elevated diabetes distress.

Primary outcomes

  1. Feasibility, service use, acceptability, attrition rate and data quality

    Time frame: The study investigators will be collecting data to assess the primary outcome measure at Month 3 and Month 6 of the study.

    The main primary outcome measure is to assess the feasibility of the study in relation to progressing to the proposed main trial. As part of the primary outcome the study investigators will be assessing the following:

    • Extent to which of participants find the interventions feasible, and acceptable
    • Proportion of people recruited from those eligible/approached
    • The number of participants who dropped out
    • The quality of the data To conduct these assessments measurements tools used will include: the Acceptability, feasibility and appropriateness of implementation (AIM) (Sturt, Griffiths et al. 2023; Weiner, Lewis 2017), and EQ-5D-5L Quality of Life questionnaire (Feng, Kohlmann et al. 2021). The AIM and EQ-5D-5L measurement tools uses a Likert scale as a unit of measure.

  2. Diversity of recruited participants against nine protected characteristics

    Time frame: This primary outcome data will be collected at month 3 baseline data collection and month 6 follow-up data collection.

    The study investigators will be assessing the diversity of recruited participants against against nine protected characteristics with the D-stress study specific measurement tool called, the Health and social equalities.

  3. To assess the quality of data collected

    Time frame: The study investigators will be collecting data to assess the primary outcome measure at monthly throughout the duration of the 6 month study.

    As part of the primary outcome the study investigators will be assessing the quality of data collected via monthly questionnaires using the Acceptability, feasibility and appropriateness of implementation (AIM) (Sturt, Griffiths et al. 2023; Weiner, Lewis 2017), measurement tool realist evaluation process interviews and non-participant observation with study investigators following RAMESES quality and publication standards guidelines (Wong G, Greenhalgh T, Westhorp G, et al. 2013).

Secondary outcomes

  1. Assessment of initial Realist Process Evaluation programme theories

    Time frame: Conducted over the course of the feasibility study from Day 1 through to the completion of the study, an average of 6 months.

    Assessing whether the initial programme theories underpinning Enhanced Usual Care (control) and REDUCE programme (experimental) explain the outcomes and participant experiences of these interventions. Non-participant observations of control and experimental intervention will be conducted. Realist Process Evaluation interviews with study participants will also be conducted over the course of the study: from day 1 (month 1) through to month 6.

  2. Proportion of TIR for interstitial blood glucose (proposed main trial co-primary outcome)

    Time frame: CGM data will be collected monthly from Month 1 through to study completion, an average of 6 months.

    The proportion of time interstitial blood glucose is in the range of 4-10 mmol/l (Battelino, Alexander et al. 2022). This will be collected via the participant's continuous glucose monitoring (CGM) device every 30 days (each month) from the start of the study (month 1) through to study completion, an average of 6 months.

    In addition to proportion of time interstitial blood glucose is in the range , below range, above range, and glucose variability, measured as coefficient of variation will be measured. Percentage of CGM sensor usage will also be measured. This will allow study investigators to determine the completeness of interstitial blood glucose sensor data and proportion of time in the preceding month the participant's blood glucose was in range.

  3. Diabetes distress score (proposed main trial co-primary outcome)

    Time frame: The T1-DDAS measurement scale will be used every 30 days from Month 1 through to study completion, estimated to be 6 months.

    The Type 1 Diabetes Distress Assessment Scale T1-DDAS 8-item CORE scale will be the key scale used to collect diabetes distress levels. Items are scored between 1 and 5, with one being Not a problem to five being A very serious problem. A core score of under 3 on each item is sub-threshold and ≥3 is elevated. The tool was 'developed and validated and standardized' for adults with Type 1 diabetes by the Behavioural Diabetes Institute to further specify the source of DD as well as the amount of DD (Institute, 2023; Fisher, Polonsky et al. 2024).

Sponsors and collaborators

Lead sponsor

Guy's and St Thomas' NHS Foundation Trust

Other

Registry information

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Sep 25, 2025
Registry last updated
Dec 4, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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