Table/Figure Captions
Table 1. Behaviours of obstetrical providers at the referring hospitals
Table 2. Vital signs and laboratory data on arrival
Table 3. Maternal outcomes
Table 4. Results of logistic regression analysis of factors for massive blood transfusion
S1. Demographic, obstetrical, and clinical characteristics
S2. Clinical factors and massive blood transfusion
S3. Receiver operating characteristic curve between massive blood transfusion, blood loss at the referring hospital, and shock index
Area under the receiver operating characteristic curve: 0.774, 95% confidence interval: 0.699–0.849, sensitivity: 77.8%, specificity: 69.8%