CHIME: Comparing Health Interventions for Maternal Equity

Summary

The goal of this comparative effectiveness trial is to compare how three different approaches to overcome barriers to resources and provide nutrition and physical activity counseling improve maternal healthy weight in pregnancy and postpartum.

The main question it aims to answer is which of the two multi-level, multi-component interventions has greater effectiveness in reducing maternal postpartum weight retention at 12-months postpartum.

Hypothesis (primary): Both multi-level, multi-component interventions will have greater effectiveness reducing maternal postpartum weight retention at 12-months postpartum than the usual care group.

Hypothesis (secondary): The community-based intervention will have greater effectiveness than the self-management intervention.

Participants will be asked to participate in one of the study interventions from early pregnancy until 12 months postpartum and complete five research visits. General procedures include completion of:

* Questionnaires
* Dietary recalls
* In-depth interviews
* Anthropometric measurements
* Collection of blood via finger stick or blood panel

Conditions

• Obesity and Overweight
• Nutrition
• Chronic Disease
• Diabetes
• Pregnancy

Interventions

BEHAVIORAL

Self-Management

We will universally offer social needs supports (grocery, physical activity, transportation support) widely in use in clinical settings. Patients may elect to receive all, some, or none of the supports. The patient-directed, structured self-management intervention will be provided through mobile health technology (mHealth) and/or mailings, according to patient preference. Participants will receive health information to support health education and behavior change.

BEHAVIORAL

Community-Based

As is currently in use broadly by community health workers, participants will complete a detailed social needs assessment and active assistance with referrals to evidence-based home visiting programs; maternal child health services to promote social support and resource access; and services to improve social determinants of health including active enrollment assistance for WIC, SNAP, healthcare and insurance, legal support, housing, job training, mental health and others. Community health workers will deliver group and individual physical activity support and assistance with behavioral goal setting.

Sponsors & Collaborators

• Patient-Centered Outcomes Research Institute

  collaborator OTHER

• Stanford University

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

FEMALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2026-01-22

Primary Completion

2030-01-15

Completion

2030-04-01

Countries

• United States

Study Locations