“…We found very few studies reporting the effect of UBT in atonic refractory PPH after vaginal delivery. We excluded 13 analytical studies because outcomes were measured in all births, 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 without disaggregating data according to the mode of delivery (Table S4 ), with one‐quarter to one‐half of the included cases ending in caesarean sections. Six studies were excluded due to: insufficient data, 39 , 40 involved women having a caesarean section, 41 the intervention being administered as part of a package, 42 UBT being administered as a first‐line treatment for PPH, 43 the outcomes reported differing from the prioritised outcomes in this systematic review 44 , 45 , 46 or involving the comparison of two different types of UBT.…”