Actively Recruiting
CHIME: Comparing Health Interventions for Maternal Equity to Reduce Postpartum Weight Retention
Led by Stanford University · Updated on 2026-03-05
795
Participants Needed
4
Research Sites
10 weeks
Total Duration
On this page
Sponsors
S
Stanford University
Lead Sponsor
P
Patient-Centered Outcomes Research Institute
Collaborating Sponsor
AI-Summary
What this Trial Is About
Researchers are evaluating how three different strategies to overcome barriers to resources and provide nutrition and physical activity counseling affect healthy weight in pregnant and postpartum women. The study focuses on which of two multi-level, multi-component interventions is more effective in reducing maternal weight retention 12 months after giving birth. The trial also compares these interventions to usual care, aiming to understand their impact on maternal postpartum weight and related health outcomes. Participants are randomly assigned to one of three groups: a self-management intervention offering social needs supports like grocery and transportation help combined with self-directed behavior tools; a community-based intervention involving detailed social needs assessments, active referral assistance, and group and individual physical activity support; or usual care, which includes standard social needs screening and provider-based lifestyle counseling. The interventions start in early pregnancy and continue until 12 months postpartum. Throughout the study, participants complete five research visits that include questionnaires, dietary recalls, in-depth interviews, body measurements, and blood collection via finger stick or blood panels. Researchers monitor maternal postpartum weight retention as the primary outcome at 12 months postpartum, along with household social needs and perinatal health outcomes. The study includes ongoing assessments and supports to track progress and adherence over the intervention period.
CONDITIONS
Brief Title
CHIME: Comparing Health Interventions for Maternal Equity
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Maternal age 18 years or older
- Maternal gestational age 20 weeks or less with viable singleton pregnancy confirmed by first trimester ultrasound
- Plans to continue receiving antenatal care at the recruitment site or network
- Self-identifies as Black/African American or Hispanic/Latino/a/e/x, or insured by Medicaid
- Ability to speak English or Spanish
- Completion of baseline data collection including survey, weight, and height before randomization
You will not qualify if you...
- Younger than 18 years at baseline
- Underweight before pregnancy (BMI less than 18 kg/m2)
- Underlying diseases or treatments affecting weight status (such as major gastrointestinal or psychiatric conditions)
- Unwilling or unable to complete study visits or intervention components
- Unwilling or unable to commit to intervention for self or infant, including plans to move more than 100 miles from recruitment site
- Multiple pregnancies (twins or more)
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - From enrollment to 12 months postpartum
Participants receive either a self-management intervention through mobile health technology and/or mailings, a community-based intervention with social needs referrals and health coaching, or usual care involving social needs screening and provider-based lifestyle counseling.
Regular visits as scheduled by the study
Trial Site Locations
Total: 4 locations
1
Stanford University
Palo Alto, California, United States, 94304
Active, Not Recruiting
2
New York Presbyterian Queens
Flushing, New York, United States, 11355
Actively Recruiting
3
Columbia University Medical Center
New York, New York, United States, 10012
Actively Recruiting
4
NYU Langone Health
New York, New York, United States, 10016
Actively Recruiting
Research Team
J
Jennifer Woo Baidal Associate Professor, MD, MPH
How is the study designed?
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
3
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