Key Takeaways
Extended Takeaways
- The depression effect was clinically meaningful, not just statistically significant: EPDS scores fell by 5.4 in the experimental group, and participants were 32 times more likely than controls to achieve a ≥4-point improvement (OR = 32.14; 95% CI, 3.51 to 294.22).
- Among women with current major depressive disorder at baseline, randomization to peer-delivered group CBT increased the odds of remission at 9 weeks (OR = 9.00; 95% CI, 1.14 to 71.04), suggesting benefit extends beyond symptom score reduction.
- Using the Matthey Reliable Change Index, 40.9% of experimental participants (9/22) were classified as recovered and 54.5% (12/22) as improved at T2, compared with 6.3% (1/16) and 31.3% (5/16) in controls; 25.0% (4/16) of controls deteriorated versus 4.5% (1/22) of treated participants.
- The intervention did not change perceived social support or immediate Postpartum Bonding Questionnaire outcomes from T1 to T2, so clinicians should not assume that mood improvement will produce parallel short-term gains in these domains.
- At 6 months, gains were maintained in the experimental group, with no statistically significant change in EPDS from T2 to T3 (11.1 [4.4] to 10.6 [6.1]; t15 = 0.48, P = .64) and high stability (r = 0.81, P < .01).
- This model was feasible with limited formal training: peers completed 2 days of classroom instruction plus a 9-week observership, 84% of participants (38/45) attended 5 or more sessions, and therapeutic alliance ratings were high on STAR-P.
