Group interpersonal psychotherapy for postnatal depression: a pilot study

We conducted a pilot study to assess the potential effectiveness of group interpersonal psychotherapy (IPT-G) as a treatment for postnatal depression (PND). The study was also established to test a treatment manual for IPT-G, assess the acceptability of this format for participants and test a recruitment strategy for a randomised controlled trial. 18 mothers diagnosed with PND participated in 2 individual session and 8 sessions of group IPT. A two-hour psychoeducational session was also held for the partners of the participants. Measures of depressive symptomatology and social adjustment were administered by an independent clinician at baseline, 4 weeks, 8 weeks and 3 months post treatment. Patient satisfaction with the treatment was also evaluated. Severity scores on the BDI, EPDS and the HDRS decreased from pre- to post-treatment. This was maintained at three months follow up. No overall improvement in the Social Adjustment Scale-Self Report was noted, although there was improvement in their relationship with their significant other. The results confirm previous work that IPT-G may improve symptom severity for women suffering from postnatal depression. Limitations included the use of antidepressant therapy by 67% of subjects and the lack of a control group. There is a need for further randomised controlled trials of IPT-G with larger sample sizes to establish its effectiveness as treatment for PND.