Collaborative care score
Table 1 shows an overview of the CCC of all studies. Of the 35 studies, 33 interventions met at least 1 criterion and most studies met 2 criteria. A multi-professional approach to patientcare was the most scored and interprofessional communication was the least scored criterion. Of the 35 studies, 6 studies met all CCC. The studies with high CCS scores of 3 or 4 (n=13) were all evidence-based interventions (CBT, IPT, multicomponent, psychoeducation) provided by multiple professionals to depressive women. All interventions with a score of 4 were provided to women with additional psychosocial risk factors. Whereas the CCS 3 studies provided follow-up sessions after treatment only, the CCS 4 studies provided more often follow-up sessions during treatment. Also, more professionals were involved in the CCS 4 studies and interprofessional communication took place. Of the 29 multi-professional interventions, 25 interventions were provided by a gynaecologist/midwife and a mental health therapist. The other 4 interventions were provided by a team of 3 to 6 different professionals.