Conclusion
This study demonstrated the effectiveness of a postnatal supportive education program for husbands (male partners) in improving perceived social support, maternal self-efficacy, and stress in primiparous women. Therefore, policymakers in postpartum care are advised to consider the participation of husbands in the postpartum care process and to devise plans to increase the awareness of husbands and their role in promoting maternal and infant health. Also, to confirm the results of this study, a randomized controlled trial with a larger sample size from the whole population is suggested.