Evaluation of the Pregnancy to Parenthood program: A dyadic intervention for mothers with perinatal mental disorders and their infants

Dyadic interventions targeting maternal mental health and the mother-infant relationship in the perinatal period are critical due to the potential consequences of perinatal mental illness and relational disturbance for the mother, the infant, and their family. This paper describes the Pregnancy to Parenthood (P2P) model of care, a dyadic mother-infant community-based program designed to support vulnerable families in Western Australia in the context of an identified need to build workforce capacity. A pragmatic service evaluation study was conducted by analyzing routine clinical data collected from 105 dyads who completed pre- and post-intervention measures, including the Edinburgh Postnatal Depression Scale (EPDS), Perinatal Anxiety Screening Scale (PASS), and the Mother Object Relations Scale-Short Form (MORS-SF). Reliable change index and cut-off analyses indicated a clinically reliable pre-post reduction in perinatal depressive and anxiety symptoms for 71% and 68% of the sample, respectively. Significant pre-post improvements with medium effect sizes (r = -.46, r = -.32) were found for caregiving representations on the MORS-SF, suggesting representations became more balanced. These results provide provisional evidence that the P2P model of care may be effective in improving maternal mental health and caregiving representations. Further research is required to evaluate the efficacy of P2P in relation to enhancing family well-being, and to inform policy and mental health service development.