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Not yet recruitingNCT07689877GUIDEUpdated Sep 29, 2026

Glucose, Understanding, Integrated Digital Health, and Engagement (GUIDE) Study

An interventional study of Integrated Digital Health (IDH) platform and Provider engagement in Diabetes and Diabetes Type 2, sponsored by Yale University. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-09-29.

Sponsored by Yale University · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
300
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate whether an Integrated Digital Health (IDH) intervention with and without healthcare provider engagement, improves glycemic control and diabetes-related outcomes among adults with Type 2 diabetes. The study will also assess the feasibility of integrating this approach into routine primary care to support personalized, data-informed diabetes management.

Read the detailed description

Participants will complete a total of three study visits: a baseline visit (which includes consent, screening, and enrollment procedures), a 16-week follow-up visit, and a 32-week follow-up visit. Each study visit is expected to last approximately 30 minutes. In addition, participants will complete study surveys throughout the study period, which are expected to require approximately 30-40 minutes per survey. Depending on study group assignment, participants may also use study devices and mobile applications to track health behaviors and/or participate in telehealth visits with a healthcare provider. The frequency and duration of these activities will vary by study group.

02

Conditions studied

  • Diabetes
  • Diabetes Type 2
03

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • diagnosis of T2D for at least one year
  • recent 3 month-HbA1c, 8-11%
  • ownership of a smartphone
  • English or Spanish speaking.

Exclusion criteria

Exclusion Criteria:

  • pregnant
  • not available or willing to use CGM or study device/platform
  • serious medical conditions or active thought disorders (e.g., terminal cancer, schizophrenia)

In addition to the self-report of the HbA1c within the past 3 months, potential participants will be screened with a point-of-care (POC) HbA1c (A1CNow®+).

04

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
300 participants (estimated)

Study arms

  • No intervention
    Group A: Continuous Glucose Monitoring (CGM)-only

    Continuous Glucose Monitoring (CGM)-only

  • Experimental
    Group B: Integrated Digital Health (IDH) platform without provider engagement

    IDH without provider engagement

    Behavioral: Integrated Digital Health (IDH) platform

  • Experimental
    Group C: Integrated Digital Health (IDH) platform with provider engagement

    IDH with provider engagement

    Behavioral: Integrated Digital Health (IDH) platform · Behavioral: Provider engagement

Interventions

  • BehavioralIntegrated Digital Health (IDH) platform

    CGM, wearable for physical activity and sleep, food scan/log

  • BehavioralProvider engagement

    Weekly feedback through the IDH platform plus monthly video calls

05

What researchers measure

Primary outcomes

  1. Mean Hemoglobin A1c (HbA1c)

    HbA1c in milligrams per deciliter (mg/dL) will be measured using blood testing conducted according to the standardized procedures of the National Glycohemoglobin Standardization Program (NGSP).

    Time frame: Baseline, 16 weeks and 32 weeks

  2. Mean Glucose Variability (Coefficient of Variation [%CV])

    Glucose variability will be derived from continuous glucose monitoring (CGM) data and calculated as the coefficient of variation (CV = standard deviation/mean glucose × 100). This measure reflects intra- and inter-day fluctuations in glucose levels. Consistent with consensus recommendations, a CV ≤36% is considered stable glucose variability.

    Time frame: Baseline, 16 weeks and 32 weeks

  3. Percentage of glucose readings with Time in Range (TIR)

    TIR will be derived from CGM data and calculated as the percentage of glucose readings and time per day within the target glucose range of 70-180 mg/dL (3.9-10.0 mmol/L). Consistent with consensus recommendations, a TIR ≥70% is considered an indicator of optimal glycemic management.

    Time frame: Baseline, 16 weeks and 32 weeks

Secondary outcomes

  1. Mean score Revised Summary of Diabetes Self-Care Activities (SDSCA)

    12-item validated measure evaluating adherence to diabetes self-care behaviors, including diet, physical activity, blood glucose monitoring, and medication adherence. Total score range 0-7 with higher scores indicating more adherence.

    Time frame: Baseline, 16 weeks and 32 weeks

  2. Mean score Diabetes Management Self-Efficacy Scale

    20-item validated instrument measuring participants' confidence in their ability to manage diabetes-related tasks and challenges. Total score range 1-5 with higher scores indicating a greater level of self-efficacy.

    Time frame: Baseline, 16 weeks and 32 weeks

  3. Mean score Diabetes Distress Scale

    17-item scale which assesses distress associated with diabetes management, healthcare providers, emotional burden, and interpersonal concerns. Total score range 1-6 with higher scores indicating more distress.

    Time frame: Baseline, 16 weeks and 32 weeks

  4. Mean score Diabetes Quality of Life Brief Clinical Inventory

    15-item validated instrument evaluating the impact of diabetes on physical, emotional, and social well-being. Total score range 1-5 with higher scores indicating a more negative perspective of the condition.

    Time frame: Baseline, 16 weeks and 32 weeks

06

Study locations

1 site
  • Yale School of Nursing
    New Haven, Connecticut 06477, United States
07

References and documents

Individual participant data

Plan to share: Yes — De-identified study data will be shared per NIH data sharing policy.

No publications or documents are linked to this record.

08

Registry details

Key details

Study ID
NCT07689877
Lead sponsor
Yale University
Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Responsible party
Sponsor
First posted
Jul 8, 2026
Start date
Mar 2027 (estimated)
Primary completion
Mar 2031 (estimated)
Completion
Mar 2031 (estimated)
Last update
Sep 29, 2026

Study contacts

Soohyun Nam, PhD
Contact
soohyun.nam@yale.edu
203-737-2822
Soohyun Nam, PhD, APRN, ANP-BC, FAHA, FAAN
principal investigator · Yale University School of Nursing

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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