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Diabetes Mellitus, Type 2DD-MeNCT03130699

Dulce Digital-Me: An Adaptive mHealth Intervention for Underserved Hispanics With Diabetes

A study testing Dulce Digital, Dulce Digital-Me (Automated Delivery) and Dulce Digital-Me (Medical Assistant) in people with Diabetes Mellitus, Type 2, run by Scripps Whittier Diabetes Institute at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will compare Dulce Digital (i.e., the investigators' proven-effective combination of "one-size-fits-all" educational text messages and nurse monitoring of patient-transmitted blood glucose values) and Dulce Digital-Me (DD-Me), an adaptive/dynamic mHealth (mobile health) intervention that is tailored to… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Diabetes Mellitus, Type 2
What is being tested?
Dulce Digital, Dulce Digital-Me (Automated Delivery) and Dulce Digital-Me (Medical Assistant)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
310 participants
Where
2 sitesUnited States
Study dates
31 Oct 2017to 14 Aug 2021
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Self-identified Hispanic/Latino
  • 18 years or older
  • Registered patient of a Neighborhood Healthcare Clinic
  • Diagnosed with T2DM (Type 2 Diabetes Mellitus)
  • HbA1c ≥ 8.0% and/or SBP ≥ 160 mmHg, and/or LDL-C ≥ 100 mg/dL in the last 30 days

Who cannot join

  • Severe illness precluding regular clinic visits
  • Pregnant or lactating
  • Type 1 or gestational diabetes
  • Lack of minimal literacy
  • Plans to relocate
  • Severe auditory or visual problems
  • Primary language other than Spanish or English
  • Unwilling to carry a mobile phone

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Scripps Mercy Chula Vista

    Chula Vista, California, 91910

  • Scripps Whittier Diabetes Institute

    La Jolla, California, 92037

Other trials in United States

About this study

This study will compare Dulce Digital (i.e., the investigators' proven-effective combination of "one-size-fits-all" educational text messages and nurse monitoring of patient-transmitted blood glucose values) and Dulce Digital-Me (DD-Me), an adaptive/dynamic mHealth (mobile health) intervention that is tailored to individuals' needs and behavioral progress, in improving diabetes clinical control, adherence, and patient-provider communication in Hispanics - an at-risk, understudied population that experiences disparities in diabetes prevalence and outcomes. These striking disparities in the growing and aging US Hispanic population have taxed the US healthcare system, while significantly reducing quantity and quality of life for millions of individuals. By offering an innovative, scalable, and sustainable approach that seamlessly integrates several mHealth technologies into existing primary care team processes to improve the health of Hispanics (and eventually, other at-risk, underserved groups), DD-Me has strong potential to significantly impact public health.

Read the detailed description

Individuals of low socioeconomic (SES) and ethnic minority status, including Hispanics, the largest U.S. ethnic minority group, are disproportionately affected by diabetes. Poor healthcare access and cultural barriers prevent optimal care, adherence, and clinical benefit, thus placing Hispanics at high risk for costly diabetes complications. The investigators' established academic-healthcare-community partnership has unique experience in developing and testing innovative, cost-effective, and sustainable chronic care interventions to reduce disparities and improve health in underserved communities. The investigators recently developed Dulce Digital (i.e., "one-size-fits-all" educational text messages, with nurse monitoring of patient-transmitted blood glucose values), which improved glycemic control across 6 months, relative to usual care in a recent randomized controlled trial (RCT) of N=126 Hispanic patients with poorly controlled type 2 diabetes (T2DM). The process evaluation for this trial indicated that Dulce Digital was both feasible and acceptable from patient and provider perspectives; however, patients expressed a preference for a more individualized intervention, and providers requested an even greater focus on health behavior change. Thus, the proposed RCT will examine the comparative effectiveness of Dulce Digital versus "Dulce Digital-Me" (DD-Me) in N=414 Hispanic adults of low SES with poorly controlled T2DM from Neighborhood Healthcare, a San Diego Federally-Qualified Health Center. Guided by patient and provider feedback, DD-Me includes Dulce Digital components plus personalized goal-setting and feedback that is responsive to the individual's needs and preferences. The DD-Me adaptive feedback component will be informed by the Resources and Support for Self-Management Model and Operant Conditioning Theory, and based on the individual's progress on intermediate behavioral targets (i.e., medication adherence assessed by wireless sensor; brief mobile phone-based assessments of diet, physical activity, stress). Feedback will be delivered via algorithm-driven automated messaging in 50% of DD-Me participants and by the care team medical assistant in the remaining half to determine the feasibility and acceptability (given the purported cultural relevance of interpersonal relationships in the Hispanic culture), and the comparative effectiveness and cost of each delivery method. Changes in indicators of diabetes clinical control [i.e., glycosylated hemoglobin (HbA1c) low density lipoprotein cholesterol (LDL-C), systolic blood pressure (SBP)], patient-provider communication, and patient adherence (i.e., to medication and other diabetes self-management behaviors) will be evaluated across twelve months. Thorough process and cost-effectiveness analyses will evaluate the scalability and sustainability potential of DD-Me. This comparative evaluation of two mHealth approaches will elucidate how technology can be integrated most effectively and efficiently within existing nurse-led chronic care approaches to meet the complex needs of underserved individuals with poorly controlled T2DM.

Being tested
Dulce Digital, Dulce Digital-Me (Automated Delivery), Dulce Digital-Me (Medical Assistant)
Keywords
Diabetes, mHealth, Medical Assistant, Automated, Adaptive Feedback, Self-Management Support, Hispanics, HbA1c, Cyberinfrastructure, Federally-Qualified Health Centers, Cost-Effectiveness, T2DM, Pay-for-Performance, Medication Adherence, LDL-C, Systolic Blood Pressure, Text Messaging
Medical subject headings
Diabetes Mellitus, Type 2, Diabetes Mellitus, Medication Adherence

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Dulce DigitalBehavioural

    One-size-fits-all educational text messages, with patient monitoring and transmission of blood glucose values.

  • Dulce Digital-Me (Automated Delivery)Behavioural

    Educational text messages, with patient monitoring and transmission of blood glucose values, plus personalized goal-setting and tailored feedback delivered via automated algorithm-driven messaging, incorporated into existing primary care team processes.

  • Dulce Digital-Me (Medical Assistant)Behavioural

    Educational text messages, with patient monitoring and transmission of blood glucose values, plus personalized goal-setting and tailored feedback delivered by Medical Assistants, incorporated into existing primary care team processes.

Study groups in NCT03130699
Study groupRoleWhat they receive
Dulce DigitalExperimentalThe first of the three arms of the parallel design: The group of participants randomly assigned to this arm of the study receives one-size-fits-all educational text messages, with patient monitoring and transmission of blood glucose values.
Receives: Behavioral: Dulce Digital
Dulce Digital-Me (Automated Delivery)ExperimentalThe second of the three arms of the parallel design: The group of participants randomly assigned to this arm of the study receives educational text messages, with patient monitoring and transmission of blood glucose values, plus personalized goal-setting and tailored feedback delivered via automated algorithm-driven messaging, incorporated into existing primary care team processes.
Receives: Behavioral: Dulce Digital-Me (Automated Delivery)
Dulce Digital-Me (Medical Assistant)ExperimentalThe third of the three arms of the parallel design: The group of participants randomly assigned to this arm of the study receives educational text messages, with patient monitoring and transmission of blood glucose values, plus personalized goal-setting and tailored feedback delivered by Medical Assistants, incorporated into existing primary care team processes.
Receives: Behavioral: Dulce Digital-Me (Medical Assistant)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Glycosylated Hemoglobin (HbA1c) 6 Months After Enrollment

    Glycosylated Hemoglobin (HbA1c) six months after enrollment

    Measured: 6 months from baseline

  2. Glycosylated Hemoglobin (HbA1c) 12 Months After Enrollment

    Glycosylated Hemoglobin (HbA1c) twelve months after enrollment

    Measured: 12 months from baseline

  3. Low-density Lipoprotein-cholesterol (LDL-C); 6 Months After Enrollment

    Low-density lipoprotein-cholesterol (LDL-C); six months after enrollment

    Measured: 6 months from baseline

  4. Low-density Lipoprotein-cholesterol (LDL-C); 12 Months After Enrollment

    Low-density lipoprotein-cholesterol (LDL-C); twelve months after enrollment

    Measured: 12 months from baseline

  5. Systolic Blood Pressure (SBP); 6 Months From Enrollment

    Systolic blood pressure (SBP); six months from enrollment

    Measured: 6 months from baseline

  6. Systolic Blood Pressure (SBP); 12 Months From Enrollment

    Systolic blood pressure (SBP); twelve months from enrollment

    Measured: 12 months from baseline

Secondary outcomes (16)
  1. Patient-Provider Communication; 6 Months From Enrollment

    Patient-Provider Communication as reported by patient; six months from enrollment The minimum value on the scale is 1 and the maximum value on the scale is 5. A higher score is a better outcome.

    Measured: 6 months from baseline

  2. Patient-Provider Communication; 12 Months From Enrollment

    Patient-Provider Communication as reported by patient; twelve months from enrollment The minimum value on the scale is 1 and the maximum value on the scale is 5. A higher score is a better outcome.

    Measured: 12 months from baseline

  3. Patient Blood Glucose Monitoring; 6 Months From Enrollment

    Patient Blood Glucose Monitoring as reported by patient; six months from enrollment The minimum value on this scale is 1 day per week and the maximum value on this scale is 7 days per week.

    A higher value on this scale is a better outcome.

    Measured: 6 months from baseline

  4. Patient Blood Glucose Monitoring; 12 Months From Enrollment

    Patient Blood Glucose Monitoring as reported by patient; twelve months from enrollment The minimum value on this scale is 1 day per week and the maximum value on this scale is 7 days per week.

    A higher value on this scale is a better outcome.

    Measured: 12 months from baseline

  5. Participated in Aerobic Exercise; 6 Months From Enrollment

    Participated in Aerobic Exercise as reported by patient, six months from enrollment The minimum score is 1 and the maximum score is 7. A higher score is a better outcome.

    Measured: 6 months from baseline

  6. Participated in Aerobic Exercise; 12 Months From Enrollment

    Participated in Aerobic Exercise as reported by patient, twelve months from enrollment The minimum score is 1 and the maximum score is 7. A higher score is a better outcome.

    Measured: 12 months from baseline

  7. Participated in Strength Exercise; 6 Months From Enrollment

    Participated in Strength Exercise as reported by patient; six months from enrollment

    Measured: 6 months from baseline

  8. Participated in Strength Exercise; 12 Months From Enrollment

    Participated in Strength Exercise as reported by patient; twelve months from enrollment

    Measured: 12 months from baseline

  9. Participated in Flexibility Exercise; 6 Months From Enrollment

    Participated in Flexibility Exercise as reported by patient; six months from enrollment

    Measured: 6 months from baseline

  10. Participated in Flexibility Exercise; 12 Months From Enrollment

    Participated in Flexibility Exercise as reported by patient; twelve months from enrollment

    Measured: 12 months from baseline

  11. Healthy Eating Behaviors; 6 Months From Enrollment

    Healthy Eating Behaviors as reported by patient; six months from enrollment The minimum score is 20 and the maximum score is 76. The higher score represents a better outcome.

    Measured: 6 months from baseline

  12. Healthy Eating Behaviors; 12 Months From Enrollment

    Healthy Eating Behaviors as reported by patient; twelve months from enrollment The minimum score is 20 and the maximum score is 76. The higher score represents a better outcome.

    Measured: 12 months from baseline

  13. Diabetes Distress; 6 Months From Enrollment

    Diabetes Distress as reported by patient; six months from enrollment The minimum score is 1 and the maximum score is 6. A higher score represents a worse outcome.

    Measured: 6 months from baseline

  14. Diabetes Distress; 12 Months From Enrollment

    Diabetes Distress as reported by patient; twelve months from enrollment The minimum score is 1 and the maximum score is 6. A higher score represents a worse outcome.

    Measured: 12 months from baseline

  15. Adherence to Refills and Medications Scale (ARMS) - Patient-reported Outcome; 6 Months From Enrollment

    Adherence to Refills and Medications Scale (ARMS) - Patient-reported Outcome; six months from enrollment The minimum score is 11 and the maximum score is 44. A higher score is a better outcome.

    Measured: 6 months from baseline

  16. Adherence to Refills and Medications Scale (ARMS) - Patient-reported Outcome; 12 Months From Enrollment

    Adherence to Refills and Medications Scale (ARMS) - Patient-reported Outcome; twelve months from enrollment The minimum score is 11 and the maximum score is 44. A higher score is a better outcome.

    Measured: 12 months from baseline

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Apr 2017
  2. Study start31 Oct 2017
  3. Primary completion14 Aug 2021
  4. Study completion14 Aug 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
310 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03130699
Sponsor's protocol ID
R01DK112322-01A1
Acronym
DD-Me
Status last verified
Jun 2025
First submitted
24 Apr 2017
Last updated
25 Jun 2025
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Philis-Tsimikas A, Fortmann AL, Clark T, Spierling Bagsic SR, Farcas E, Roesch SC, Schultz J, Gilmer TP, Godino JG, Savin KL, Chichmarenko M, Jones JA, Sandoval H, Gallo LC. Dulce Digital-Me: results of a randomized comparative trial of static versus adaptive digital interventions for Latine adults with diabetes. Ann Behav Med. 2025 Jan 4;59(1):kaae077. doi: 10.1093/abm/kaae077.

    PubMed 39707158
  • Philis-Tsimikas A, Fortmann AL, Godino JG, Schultz J, Roesch SC, Gilmer TP, Farcas E, Sandoval H, Savin KL, Clark T, Chichmarenko M, Jones JA, Gallo LC. Dulce Digital-Me: protocol for a randomized controlled trial of an adaptive mHealth intervention for underserved Hispanics with diabetes. Trials. 2022 Jan 28;23(1):80. doi: 10.1186/s13063-021-05899-x.

    PubMed 35090520

Questions about this trial

What is this clinical trial studying?

A study testing Dulce Digital, Dulce Digital-Me (Automated Delivery) and Dulce Digital-Me (Medical Assistant) in people with Diabetes Mellitus, Type 2, run by Scripps Whittier Diabetes Institute at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 25 Jun 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Glycosylated Hemoglobin (HbA1c) 6 Months After Enrollment (time frame: 6 months from baseline). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03130699, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2025.

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DD-Me Clinical Trial NCT03130699 | AzTrials