Hypothesis
QMI

Compared with the control group, the intervention group has a better understanding of the mental health of older primiparas, increased satisfaction among wives with the ‘mental support’ from their husbands and significantly greater reduction in wives' postpartum EPDS.Compared with the control group, the intervention group has a better understanding of the physical health of older primiparas, greater satisfaction among wives with ‘housework support’ and ‘childcare support’ from their husbands, and a significantly greater reduction in the wives' physical burden after childbirth.Compared with the control group, the intervention group shows significantly greater increases in wives' satisfaction with the three husbands' supports and much higher satisfaction with their postpartum marital relationship as reflected in the higher Quality Marriage Index (QMI).