Public Health Nurse-Peer Co-Led Group Cognitive Behavioral Therapy for Postpartum Depression

The primary objective of the Randomized Controlled Trial (RCT) is to determine if a 9-week group Cognitive Behavioral Therapy (CBT) intervention delivered online and co-led by public health nurses (PHNs) and peers added to treatment as usual (TAU) can improve postpartum depression (PPD) more than TAU alone. Peers are individuals who have previously recovered from PPD and received training to deliver the intervention. The secondary objective of the RCT is to determine if the intervention can effectively treat its common comorbidities (anxiety) and complications (parenting stress, social support, mother-infant relationship, and infant temperament) and whether the intervention is cost-effective. 170 mothers/birthing parents will take part in the study with 50% being randomly assigned to the intervention group. All participants complete online questionnaires at 3 time points: baseline (T1), 9 weeks later (T2-immediately post-intervention in the experimental group to assess effectiveness) and 6 months later (T3-intervention durability).