NCT05651490

Brief Summary

The goal of this randomised controlled trial is to test a cognitive-behavioural intervention, Problem Solving Treatment for Diabetes (PST-D) in patients with type 2 diabetes. The main questions it aims to answer are:

  • To evaluate the clinical effectiveness of PST-D compared with the attention control group.
  • To determine the impact of PST-D on patient-centred, behavioural, and psychosocial outcomes.
  • To identify independent factors associated with an improvement in HbA1c and reductions in incidence and progression diabetic retinopathy, diabetic neuropathy, diabetic peripheral neuropathy, and visual impairment at 18-month follow-up in both groups; and determine if these factors mediate the associations between the PST-D intervention with the above outcomes.
  • To quantify the incremental cost-effectiveness of PST-D compared with the attention control group at 18-month follow-up.
  • To understand participants' views, experiences, and opinions about PST-D; and the barriers and facilitators to program completion. Participants will complete blood tests, ocular examinations, and a series of questionnaires at baseline, 6-month, 12-month, and 18-month follow-up. Participants will also complete the intervention/ control group sessions conducted over the phone, video call, or face-to-face depending on the participant's preference. Researchers will compare the intervention group against the attention control group to determine the effectiveness of PST-D on improving clinical, patient-centred, behavioural, and psychosocial outcomes.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
106

participants targeted

Target at P50-P75 for not_applicable diabetes-mellitus-type-2

Timeline
Completed

Started Mar 2020

Longer than P75 for not_applicable diabetes-mellitus-type-2

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 9, 2020

Completed
2.7 years until next milestone

First Submitted

Initial submission to the registry

December 1, 2022

Completed
14 days until next milestone

First Posted

Study publicly available on registry

December 15, 2022

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2024

Completed
Last Updated

December 15, 2022

Status Verified

December 1, 2022

Enrollment Period

4 years

First QC Date

December 1, 2022

Last Update Submit

December 12, 2022

Conditions

Keywords

diabetesproblem solving treatmentHbA1csugar control

Outcome Measures

Primary Outcomes (1)

  • Change in HbA1c over 18 months

    Blood test

    Baseline, 6-month, 12-month, 18-month

Secondary Outcomes (11)

  • Change in total cholesterol, high-density lipoprotein, low-density lipoprotein, triglycerides over 18 months

    Baseline, 6-month, 12-month, 18-month

  • Incidence and progression of diabetic retinopathy

    Baseline, 6-month, 12-month, 18-month

  • Incidence and progression of diabetic nephropathy

    Baseline, 6-month, 12-month, 18-month

  • Incidence and progression of diabetic peripheral neuropathy

    Baseline, 6-month, 12-month, 18-month

  • Incidence and progression of distance visual impairment

    Baseline, 6-month, 12-month, 18-month

  • +6 more secondary outcomes

Study Arms (2)

Intervention Group (PST-D)

EXPERIMENTAL

Participants in the intervention group will receive usual care comprising of routine follow-up checks from their hospitals on top of the intervention (PST-D). The intervention consists of one introductory session, up to eight weekly treatment sessions, and three monthly maintenance sessions; these are individual sessions of approximately 30 to 45 minutes each and will be conducted over the phone, video call, or face-to-face depending on the participant's preference.

Behavioral: Problem Solving Treatment for Diabetes

Attention control group

ACTIVE COMPARATOR

The participants in the control group will receive usual care comprising of routine follow-up checks from their hospitals. They will also receive one introductory session and up to eight weekly treatment sessions; these are individual sessions of approximately 30 to 45 minutes each and will be conducted over the phone, video call, or face-to-face depending on the participant's preference.

Behavioral: Attention Control Group

Interventions

In the introductory session, the structure of and rationale behind PST-D will be explained. The specialist will work with the participant to develop a problem list related to diabetes self-management and smoking cessation, if applicable. During the weekly sessions, the participant will be taught and guided through the seven steps of problem solving: 1. Clarifying and defining the problem 2. Setting a realistic goal 3. Brainstorming multiple solutions 4. Generating pros and cons for each solution 5. Evaluating and choosing a preferred solution 6. Developing a specific action plan to implement the solution 7. Evaluating outcomes from the previous session. Participants will also plan to engage in at least 1 enjoyable activity daily during the week. The number of sessions will differ based on the specialist's assessment of the participant's problem-solving skills. Maintenance sessions will be delivered monthly across 3 months in order to follow-up with participants.

Intervention Group (PST-D)

During the sessions, the healthcare practitioners will provide general information and recommendations on general health topics such as oral health, hearing loss, sleep, dementia, adult vaccination, influenza, and dengue fever. Participants will also be given handouts adapted from government agencies and/or public bodies, such as HealthHub, National Health Service, National Addictions Management Service, and National Environmental Agency, on these topics. The healthcare practitioners will avoid discussing topics related to diabetes, diet, physical activity, and medication.

Attention control group

Eligibility Criteria

Age21 Years - 110 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients with type 2 diabetes and at least 1 recent reading of suboptimal glycaemic control (HbA1c ≥7.0%)
  • Able to speak English and/or Mandarin
  • Singapore citizens or those with Singapore permanent residency status
  • Aged 21 years and above
  • No cognitive impairment, as assessed using the 6-item Cognitive Impairment Test (6CIT)
  • Adequate hearing with/without hearing aids to respond to normal conversation
  • Consent to participate in the sessions if randomised to the PST-D treatment arm

You may not qualify if:

  • Have hearing or cognitive impairment compromising consent or study procedures
  • All recent HbA1c readings are \<7.0%
  • Uncontactable or unwilling/unable to participate in all the PST-D sessions if randomised to the PST-D group

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Singapore Eye Research Institute

Singapore, 169856, Singapore

Location

MeSH Terms

Conditions

Diabetes Mellitus, Type 2Diabetes Mellitus

Condition Hierarchy (Ancestors)

Glucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System Diseases

Study Officials

  • Ecosse Lamoureux, PhD

    Singapore Eye Research Institute

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Participants will be randomly allocated to one of the two arms: intervention group (PST-D) and attention control group. The random assignment will be based on a code generated by R statistical software, contained within sequential sealed envelopes. The random number sequence will be password protected and available to a statistician external to the study team who will conduct the randomisation process. The randomisation process is designed to yield an expected assignment ratio of 1:1
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director

Study Record Dates

First Submitted

December 1, 2022

First Posted

December 15, 2022

Study Start

March 9, 2020

Primary Completion

March 1, 2024

Study Completion

March 1, 2024

Last Updated

December 15, 2022

Record last verified: 2022-12

Locations