Contributions
This study makes up for the shortage and lack of research-based evidence about the use of the teach-back method for postpartum maternal and infant health by investigating the effects of the teach-back methods in terms of MHL, postpartum health behaviours, and postpartum maternal-infant health outcomes. This study provides tangible knowledge and practical experience for successfully implementing the teach-back method in routine practice. The knowledge and insights produced by this study could help health professionals in maternal and infant care or other health care settings design and implement education programs incorporated with the teach-back technique for promoting patient health.