Peer-reviewed article

Targeted social and behavior change communication (SBCC) in a high adolescent pregnancy setting of Bangladesh: a cluster-randomized study protocol engaging key family members.

Seohyun Lee, Gohtbyeol Kim, SeYeon Kim, Narae Kim, Jihye Kim et al. · 14 Apr 2026

Abstract

BACKGROUND: Maternal health service utilization remains low in Bangladesh, while maternal health outcomes are poor and adolescent pregnancy rates are high. In this context, targeted social and behavior change communication (SBCC) can be an effective approach. This targeted SBCC research was participatorily designed in collaboration with Bangladesh local partners and was funded as part of the 2023-27 KOICA Strategic Partnership Program (SPP)- Strengthening Maternal and Neonatal Health System in Rangpur, Bangladesh (No. 2023-0515). The study was informed by implementation and behavior change theories, engaging key family members in the intervention. METHODS: A hybrid effectiveness-implementation type II cluster-randomized study was designed to measure key maternal health service utilization outcomes as well as implementation outcomes. A total of 750 participants classified into four targeted groups-1) adolescent pregnant women, 2) adult pregnant women, 3) husbands and 4) mothers-in-law, will be invited to participate in group-based interactive community courtyard sessions. These 5-month curriculum targeted SBCC sessions cover maternal and newborn health topics such as antenatal care (ANC), safe delivery, postnatal care (PNC), and neonatal care. The primary outcomes include four or more ANC visits, facility delivery, Postnatal Care (PNC) and neonatal care within 48 h after delivery. Secondary outcomes are perceptions on early marriage, maternal health-seeking behaviors, family support, decision making, and satisfaction with the information gained from the targeted SBCC sessions. To assess the effectiveness, baseline and endline surveys, along with endline focus group discussions (FGDs) will be conducted before and after the 5-month curriculum. Additionally, implementation outcomes such as adoption, penetration, acceptability, coverage, feasibility, fidelity, and sustainability will be measured. DISCUSSION: This study engages key decision-makers such as pregnant women, their husbands, and mothers-in-law, to enhance maternal health service utilization. As Bangladesh is a patriarchal society, men within households are often the primary decision-makers regarding marriage and reproductive matters. Moreover, the child marriage and adolescent pregnancy rates remain high, contributing to persistently elevated maternal and neonatal mortality. By applying implementation science frameworks and behavior change theories, this study aims to generate evidence to inform future scale-up efforts in similar contexts. TRIAL REGISTRATION: The protocol was registered with ISRCTN registry under registration ISRCTN12515877.