Scaling Up Maternal Mental Healthcare by Increasing Access to Treatment (SUMMIT)

Eligible participants are randomly assigned to the same BA treatment for perinatal depressive and anxiety symptoms in one of four arms: 1) In-person specialist; 2) Telemedicine specialist; 3) In-person non-specialist; 4) Telemedicine non-specialist. However, due to the COVID-19 pandemic, recruitment was adjusted as below: 1. March 2020-July 2021: For the duration of the COVID-19 pandemic period participants were only randomized 1:1 to 1) Telemedicine non-specialist; 2) Telemedicine specialist. 2. July 2021 to January 2022: Randomization of participants to all 4 arms resumed, using a raking approach (weight ratio of 3:1 favoring In-Person to Telemedicine), to rebalance the arms. 3. January 2022 to April 2022: In light of the COVID-19 Omicron variant, participants were only randomized 1:1 to 1) Telemedicine non-specialist; 2) Telemedicine specialist. 4. April 2022 to present: Randomization of participants to all 4 arms resumed at all sites (ratio 1:1:1:1) to 1) In-person specialist; 2) Telemedicine specialist; 3) In-person non-specialist; 4) Telemedicine non-specialist. Randomization to all 4 arms will be followed until in-person arms are fully enrolled after which randomization 1:1 to the two telemedicine arms will be followed. A flexible study design was established at each site based on site-specific COVID restrictions. This approach was verified by the study statistician, an independent methodologist and the study funder. All analyses will be run as both intent-to-treat and per protocol.