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Diabetes Mellitus, Type 2NCT05356884

Adolescent-mediated Family Diabetes Intervention: American Samoa

A study testing Diabetes Intervention and Leadership & Life Skills in people with Diabetes Mellitus, Type 2, run by Yale University at 1 site in American Samoa.

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

The goal of this project is to test the feasibility, acceptability, and preliminary efficacy of an adolescent-mediated intervention designed to improve the glycemic control and self-care practices of a parent/grandparent. Read more about this study

Who is it for?
Ages 14 years and olderHealthy volunteers can take part
Conditions the study is for
Diabetes Mellitus, Type 2
What is being tested?
Diabetes Intervention and Leadership & Life Skills
Could I receive a placebo?
No, everyone receives an active treatment
How many people
360 participants
Where
1 siteAmerican Samoa
Study dates
7 Jul 2022to 31 Dec 2025
Phase
Interventional
Are there results?
None posted in the registry

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 14 years and older
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Adolescent
  • 14-17 years of age
  • Samoan ethnicity
  • Shares a household with a parent, legal guardian, or grandparent with type II diabetes
  • Willing and able to consent to participation
  • Able to participate in group sessions after school or on Saturday mornings
Show all 13Show fewer
  • Adult
  • Samoan ethnicity
  • Diagnosed with type II diabetes at least 12 months prior to study enrollment
  • HbA1c >= 6.5%
  • Prescribed medication (tablets or insulin) to control their diabetes
  • Willing and able to consent to participation
  • Willing and able to consent to adolescent's participation

Who cannot join

  • Adolescent
  • Planning to become pregnant during the study period (any adolescent who becomes pregnant will be excluded from analysis)
  • Planning to leave American Samoa in the next 18 months
  • Participants will be excluded if they report any of the following:
  • Uncontrolled hypertension (systolic >180 mmHg or diastolic >105 mmHg)
  • Heart attack, stroke, or transient ischemic attack in the past year
Show all 23Show fewer
  • Treatment for cancer
  • Chest pain or shortness of breath with minimal activity
  • Chronic lung disease, or asthma requiring home oxygen therapy
  • Contraindications to moderate physical activity
  • Inability to read/speak Samoan and/or English.
  • Overt diabetes (HbA1c ≥6.5%) based on point-of-care testing during the screening process
  • Adult
  • Planning to become pregnant during the study period (any adult who becomes pregnant will be excluded from analysis)
  • Planning to leave American Samoa in the next 18 months
  • Participants will be excluded if they report any of the following:
  • Uncontrolled hypertension (systolic >180 mmHg or diastolic >105 mmHg)
  • Heart attack, stroke, or transient ischemic attack in the past year
  • Treatment for cancer
  • Chest pain or shortness of breath with minimal activity
  • Chronic lung disease, or asthma requiring home oxygen therapy
  • Contraindications to moderate physical activity
  • Inability to read/speak Samoan and/or English.

Trial locations and contacts

1 site in 1 country.

American Samoa1 site
  • OLaGA Research Center

    Pago Pago

About this study

Official title: An Adolescent-mediated Intervention to Improve Diabetes Prevention and Management in Pacific Islander Families

The goal of this project is to test the feasibility, acceptability, and preliminary efficacy of an adolescent-mediated intervention designed to improve the glycemic control and self-care practices of a parent/grandparent. The preliminary impact of the intervention on adult glycemic control (HbA1c) and self-care behaviors, as well as adolescent risk factors, will be explored with the goal of informing future programs that can be scaled to reduce diabetes burden and eliminate health disparities among at risk, ethnic minority groups.

Read the detailed description

The number of individuals diagnosed with Type 2 Diabetes in the United States (US) has more than doubled since 2000 to over 30 million, with an additional 84.1 million living with prediabetes. One minority group at particular risk is Pacific Islanders (PIs), who are at disproportionate risk and face many barriers (structural and cultural) to engaging in prevention or self-care. To address the critical need for diabetes prevention and treatment programs that target PIs, and building on the family-centered culture, the objective of this project is to pilot test and evaluate a randomized controlled trial of an adolescent-mediated intervention designed to improve the glycemic control and self-care practices of a paired, adult family member with diagnosed diabetes. Dyads (n=160 dyads; an adolescent without diabetes and a parent/grandparent diagnosed with diabetes who share a household) will be randomized. Adolescents will receive either a six-month diabetes intervention or a leadership and life skills-focused control curriculum in groups (n=10 participants in each group). Aside from planned research assessments there will be no contact with the adults in the dyad, who will proceed with their usual diabetes care. To test the hypothesis that adolescents receiving the intervention will be effective conduits of diabetes knowledge and will support their paired adult in the adoption of self-care strategies, the primary efficacy outcomes will be adult glycemic control and cardiovascular risk factors (BMI, blood pressure, waist circumference). Secondarily, since exposure to the intervention may encourage positive behavior change in the adolescent themselves similar outcomes will be measured in the adolescents. Outcomes will be measured at baseline, at the end of the active intervention phase (six months post-randomization) and at 12-months post-randomization, to examine maintenance of intervention effects in the absence of contact. To determine potential for long-term sustainability and scale up, program acceptability, feasibility, fidelity, reach, and cost will be examined. Successful completion of the study aims and proof of efficacy would produce an innovative, scalable program with high potential for replication in other similar, low-resource, family-centered, ethnic minority groups across the US who are the ideal beneficiaries of innovations to reduce chronic disease risk and eliminate health disparities.

Being tested
Diabetes Intervention, Leadership & Life Skills
Keywords
Diabetes Mellitus, American Samoa, Adolescent, Pacific Islander
Medical subject headings
Diabetes Mellitus, Type 2, Diabetes Mellitus

What participants receive

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

  • Diabetes InterventionBehavioural

    A 12-session group-based intervention that will target diabetes knowledge and leadership and communication skills through facilitated discussion and experiential learning.

  • Leadership & Life SkillsBehavioural

    A 12-session group based intervention that will teach leadership and life skills (planning strategies, leadership values, emotional awareness, effective reasoning skills)

Study groups in NCT05356884
Study groupRoleWhat they receive
Diabetes InterventionExperimental12-session behavioral intervention covering diabetes pathology, self-monitoring, medication adherence, identifying and responding to emergency situations, diet, physical activity, health care utilization and maintaining healthy habits.
Receives: Behavioral: Diabetes Intervention
Leadership & Life SkillsActive comparator12-session leadership and life skills intervention focusing on adolescent self-esteem, self-efficacy, communication skills, mindfulnesss, healthy habits.
Receives: Behavioral: Leadership & Life Skills

What is being measured

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

  1. Change in Adult Glycemic Control (HbA1c) 0-6 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 0 - 6 months

  2. Change in Adult Glycemic Control (HbA1c) 0-12 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 0 - 12 months

  3. Change in Adult Glycemic Control (HbA1c) 6-12 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 6 - 12 months

  4. Change in Adult Body Mass Index (BMI) 0-6 months

    Body mass index (measure of weight control)

    Measured: 0 - 6 months

  5. Change in Adult Body Mass Index (BMI) 0-12 months

    Body mass index (measure of weight control)

    Measured: 0 - 12 months

  6. Change in Adult Body Mass Index (BMI) 6-12 months

    Body mass index (measure of weight control)

    Measured: 6 - 12 months

  7. Change in Adult Blood Pressure (BP) 0 - 6 months

    Blood Pressure (marker of hypertension risk)

    Measured: 0 - 6 months

  8. Change in Adult Blood Pressure (BP) 0 - 12 months

    Blood Pressure (marker of hypertension risk)

    Measured: 0 - 12 months

  9. Change in Adult Blood Pressure (BP) 6 - 12 months

    Blood Pressure (marker of hypertension risk)

    Measured: 6 - 12 months

  10. Change in Adult Waist Circumference (WC) 0 - 6 months

    Waist circumference (measure of weight control)

    Measured: 0 - 6 months

  11. Change in Adult Waist Circumference (WC) 0 - 12 months

    Waist circumference (measure of weight control)

    Measured: 0 - 12 months

  12. Change in Adult Waist Circumference (WC) 6 - 12 months

    Waist circumference (measure of weight control)

    Measured: 6 - 12 months

Secondary outcomes (12)
  1. Change in Adolescent Glycemic Control (HbA1c) 0 - 6 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 0 - 6 months

  2. Change in Adolescent Glycemic Control (HbA1c) 0 - 12 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 0 - 12 months

  3. Change in Adolescent Glycemic Control (HbA1c) 6 - 12 months

    Glycated hemoglobin (marker of long term glycemic control)

    Measured: 6 - 12 months

  4. Change in Adolescent Body Mass Index (BMI) 0 - 6 months

    Body mass index (measure of weight control)

    Measured: 0 - 6 months

  5. Change in Adolescent Body Mass Index (BMI) 0 - 12 months

    Body mass index (measure of weight control)

    Measured: 0 - 12 months

  6. Change in Adolescent Body Mass Index (BMI) 6 - 12 months

    Body mass index (measure of weight control)

    Measured: 6 - 12 months

  7. Change in Adolescent Blood Pressure (BP) 0 - 6 months

    Blood Pressure (marker of hypertension risk)

    Measured: 0 - 6 months

  8. Change in Adolescent Blood Pressure (BP) 0 - 12 months

    Blood Pressure (marker of hypertension risk)

    Measured: 0 - 12 months

  9. Change in Adolescent Blood Pressure (BP) 6 - 12 months

    Blood Pressure (marker of hypertension risk)

    Measured: 6 - 12 months

  10. Change in Adolescent Waist Circumference (WC) 0 - 6 months

    Waist circumference (measure of weight control)

    Measured: 0 - 6 months

  11. Change in Adolescent Waist Circumference (WC) 0 - 12 months

    Waist circumference (measure of weight control)

    Measured: 0 - 12 months

  12. Change in Adolescent Waist Circumference (WC) 6 - 12 months

    Waist circumference (measure of weight control)

    Measured: 6 - 12 months

Timeline

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

  1. First posted2 May 2022
  2. Study start7 Jul 2022
  3. Primary completion31 Dec 2025
  4. Study completion31 Dec 2025

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
360 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05356884
Sponsor's protocol ID
2000031325
Other IDs
1R01DK128277-01A1
Status last verified
Oct 2026
First submitted
26 Apr 2022
Last updated
22 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: De-identified data may be shared with other researchers for the purpose of analyses agreed upon with the Principal Investigator

Publications

  • Hawley NL, Rivara AC, Naseri J, Faumuina K, Potoa'e-Solaita N, Iopu F, Faiai M, Naveno E, Tasele S, Lefale T, Lantini R, Carlson JC, Rabin TL, Semaia P, Mugadza P, Rosen RK. Protocol: Implementation and evaluation of an adolescent-mediated intervention to improve glycemic control and diabetes self-management among Samoan adults. PLoS One. 2023 Feb 16;18(2):e0279084. doi: 10.1371/journal.pone.0279084. eCollection 2023.

    PubMed 36795707

Questions about this trial

What is this clinical trial studying?

A study testing Diabetes Intervention and Leadership & Life Skills in people with Diabetes Mellitus, Type 2, run by Yale University at 1 site in American Samoa.

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 13 inclusion and 23 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 22 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in American Samoa. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Change in Adult Glycemic Control (HbA1c) 0-6 months (time frame: 0 - 6 months). The study lists 12 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 NCT05356884, which also lists 1 linked publication.

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 22 Oct 2026.

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