Intervention
Couples assigned to the control group received standard perinatal care provided by the hospitals, consisting of antenatal checkups, optional antenatal educational classes, in-hospital care, and 1 postnatal review 6 weeks post partum. Obstetricians, nurses, lactation consultants, and neonatologists provided perinatal care. In addition to standard care, parents in the intervention group were given access to the theory- and evidence-based psychoeducational mobile app SPA. As part of the SPA intervention, parents in the intervention group were also matched with and introduced to peer volunteers who provided them with emotional and informational support. Well-established theoretical frameworks have guided the development of the SPA, such as the mHealth user engagement pyramid by Singh et al [Supportive Parenting App design and features.