---
title: Social Transfers for Exclusive Breastfeeding in Brazil
nct_id: NCT06157697
overall_status: RECRUITING
phase: NA
sponsor: Swiss Tropical & Public Health Institute
study_type: INTERVENTIONAL
primary_condition: Breast Feeding, Exclusive
countries: Brazil
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT06157697.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT06157697"
ct_last_update_post_date: 2025-06-24
last_seen_at: "2026-05-12T06:07:08.685Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Social Transfers for Exclusive Breastfeeding in Brazil

**Official Title:** Social Transfers for Exclusive Breastfeeding in São Paulo, Brazil

**NCT ID:** [NCT06157697](https://clinicaltrials.gov/study/NCT06157697)

## Key Facts

- **Status:** RECRUITING
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 400
- **Lead Sponsor:** Swiss Tropical & Public Health Institute
- **Collaborators:** University of Sao Paulo, University of Basel, Swiss National Science Foundation, Federal University of São Paulo
- **Conditions:** Breast Feeding, Exclusive, Breastfeeding, Development, Child, Development, Infant
- **Start Date:** 2025-03-06
- **Completion Date:** 2027-10
- **CT.gov Last Update:** 2025-06-24

## Brief Summary

The goal of this study is to assess the effectiveness of social transfers on exclusive breastfeeding rates in São Paulo, Brazil. The main research questions are:

1. Are social transfers effective at increasing exclusive breastfeeding rates
2. Are social transfers effective in prolonging the duration of exclusive breastfeeding
3. Are social transfers effective in prolonging the duration of complementary breastfeeding
4. What are the long-term impacts of social transfers for breastfeeding on child health and development

Participants will be randomly assigned to one of three groups: 1) control, no social transfer 2) non-conditional social transfer at 6-months postpartum, and 3) conditional social transfer at six months postpartum; conditional upon the mothers exclusive breastfeeding status.

All participants receive education about the benefits of exclusive breastfeeding and current international recommendations.

Researchers will compare the intervention groups to the control group to see if social transfers are effective at increasing exclusive breastfeeding rates at six months postpartum.

## Eligibility

- **Minimum age:** 18 Years
- **Maximum age:** 50 Years
- **Sex:** FEMALE
- **Healthy Volunteers:** No

```
Inclusion Criteria:

* Gave birth in the last 72 hours
* Exclusively breastfeeding at time of recruitment and intend to continue to exclusively breastfeed
* Part of or eligible Bolsa Familia or on the Bolsa Familia list (CAD Unico)
* Lives in São Paulo
* No illnesses that contraindicates breastfeeding
* Had a healthy singleton infant of 37 weeks or more gestation with a birth weight of at least 2500 grams
* Agrees to participate and sign an informed consent; if under age (12-17 years), a legal representative will also have to agree to sign the informed consent

Exclusion Criteria:

* Plans to move permanently outside study area
* Has a medical, intellectual or psychological disability
* Contraindication for breastfeeding
* Preterm births
* Children born with \< 2500 grams
```

## Arms

- **Control Group** (NO_INTERVENTION) — Only educational materials focused on the benefits of exclusive breastfeeding and the current international recommendations are provided.
- **Intervention Group 1 - Non-Conditional Social Transfer** (EXPERIMENTAL) — Educational materials focused on the benefits of exclusive breastfeeding and the current international recommendations are provided. At the baseline visit, participants are told that at the 6-month visit, they will receive a gift of their choice - which is meant to show our appreciation and support for their efforts in breastfeeding.

Intervention: Behavioral: Social Transfer
- **Intervention Group 2 - Conditional Social Transfer** (EXPERIMENTAL) — Educational materials focused on the benefits of exclusive breastfeeding and the current international recommendations are provided. At the baseline visit, participants are told that at the 6-month visit, they will receive a gift of their choice if they are still exclusively breastfeeding.

Intervention: Behavioral: Social Transfer

## Interventions

- **Social Transfer** (BEHAVIORAL) — Social transfers are defined as a cash or in-kind transfer. Based on previous social transfer programs in Brazil, we will offer gift packages for mothers at 6 months. The options include: diapers, hygiene products, child developmental toys, transport vouchers, or a combination of these.

## Primary Outcomes

- **Prevalence of Exclusive Breastfeeding** _(time frame: 6 months postpartum)_ — The proportion of women exclusively breastfeeding at 6-months postpartum will be assessed using a questionnaire. Exclusive breastfeeding is defined as receipt of only human milk - which is consistent with the World Health Organization guidelines. At six months postpartum, mothers are asked if they are still currently breastfeeding. If they answer yes, a follow-up question on if they provided any other liquids, solids, or supplements to their child to determine the exclusive breastfeeding status.
- **Duration of Exclusive Breastfeeding** _(time frame: 6 months postpartum)_ — The duration of exclusive breastfeeding will be assessed using a questionnaire. Exclusive breastfeeding is defined as receipt of only human milk - which is consistent with the World Health Organization guidelines. At six months postpartum, mothers are asked if they are still currently breastfeeding. If they answer yes, a follow-up question on if they provided any other liquids, solids, or supplements to their child to determine the exclusive breastfeeding status.

## Secondary Outcomes

- **Child Health Outcomes** _(time frame: 1 month, 6 months, 1 year, 2 years)_
- **Early Childhood Development** _(time frame: 1 year, 2 years)_
- **Prevalence of Complementary Breastfeeding** _(time frame: 6 months, 1 year, 2 years)_
- **Duration of Complementary Breastfeeding** _(time frame: 6 months, 1 year, 2 years)_

## Locations (2)

- University of Sao Paulo, São Paulo, Butantã, Brazil — _RECRUITING_
- Federal University of São Paulo, São Paulo, Brazil — _RECRUITING_

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `sponsor.collaborators` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of sao paulo|são paulo|butantã|brazil` — added _(2026-05-12)_
- `locations.federal university of são paulo|são paulo||brazil` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT06157697.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT06157697*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*