In Indonesia, husbands often serve as the primary birth partner, but their involvement during childbirth is still influenced by variations in knowledge, attitudes, emotional readiness, cultural norms, and health facility policies. Education through modules, booklets, e-modules, and similar media is viewed as a practical strategy to prepare husbands to fulfill their role as birth partners more effectively. The objective is to examine the scientific evidence regarding the effectiveness of module-based education on knowledge, attitudes, and husbands’ involvement in childbirth support, as well as to situate this within the broader evidence base on labor companionship. The synthesis was conducted thematically across review articles, observational studies, qualitative studies, quasi-experimental studies, and reports on educational interventions. High-level evidence indicates that continuous support during childbirth enhances the childbirth experience, improves certain maternal outcomes, and strengthens the mother’s sense of security. On the other hand, specific evidence regarding childbirth companion modules for husbands is still dominated by small-scale quasi-experimental studies, community service projects, and implementation studies. Consistently, module formats—booklets, e-modules, and educational videos—enhance knowledge, understanding of roles, motivation, and husbands’ readiness to provide emotional, informational, instrumental, and advocacy support.
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