“…Thirteen studies had been conducted in [19][20][21][22][23][24][25][26][27][28] 6 DH (L2&L3) -HIC 10 RCT 2a,b,c 3b NHS Foundation Trust, Liverpool, UK [44,45] --HIC 1 Before-after 4b,c Victoria, Australia [46] 7 [48] --LMIC 1 Before-after 1 2b −−− −−− Sub-Saharan Africa (7 countries) [49] --LMIC 1 Before-after 1 2b,c −−− −−− Somaliland, Somalia [50] 3 8 LMIC 1 Before-after 1 2b,c 3a 4b Making it Happen, Bangladesh & India [52] 4 DH (Bangl.) [54] 3 DH; 3 FH 40 LMIC 1 Quasi-experimental 3c CRM based National study, US [58] 15 -HIC 1 RCT 4c Beth Israel Deaconness Medical Center, US [59] 1 TTH -HIC 1 Before-after 2a 4b,c Perinatal Safety Initiative, US [60] 1 TH -HIC 1 Before-after 3a 4b,c Rhode Island Hospital, US [61] 1 -HIC 1 Before-after 4b,c Geneva University Hospital, Switzerland [63] 1 TTH -HIC 1 Before-after 1 2a 3a TeamSTEPPS, US [18] 3 CH -HIC 1 RCT 2a 4c OBCTT, Southeast US [62] 1 TTH -HIC 1 Quasi-experimental before-after 1 2a,b,c −−− −−− OTHER CEmONC, Tanzania [17] 1 DH LMIC 1 Before-after 3c Copenhagen University Hospital, Denmark [64] 1 TTH -HIC 1 Before-after 1 2a,b 3a 4b University of Oporto, Portugal [65] 1 TTH -HIC 1 Before-after 1 2b 3a * In progress -abstracts not included [31,32] DH = district hospital L1 = level 1 −−− = studies not going beyond Kirkpatrick level 2 RH = referral hospital L2 = level 2 (secondary/regional) FH = field hospital TH = tertiary hospital/medical centre L3 = level 3 (tertiary) CH = community hospital TTH = tertiary and teaching hospital included in the studies spans the whole spectrum from tertiary teaching hospitals to community-and field hospitals.…”