Prognostic accuracy of shock index for severe postpartum hemorrhage in high-income country: Protocol for a systematic review and meta-analysis - Prognostic accuracy of shock index for severe postpartum hemorrhage in high-income country: Protocol for a systematic review and meta-analysis

ine studies were included after the eligibility assessment. All studies were considered to either have a high risk of bias or high applicability concerns. The sensitivity of the four studies that defined severe PPH as PPH requiring blood transfusion ranged from 0.51 to 0.80, whereas their specificity ranged from 0.33 to 0.92.