Study design
Following Shaare Zedek Medical Center (SZMC) IRB approval (SZMC 0064-20) and given that the study was based on patient records, informed consent was waived. A retrospective cohort database study was conducted at Shaare Zedek Medical Center (SZMC), a tertiary obstetric and trauma center.
Clinical setting: The SZMC is a 1000-bed university-affiliated acute care hospital with a Division of Obstetrics that includes a high-risk pregnancy unit, two labor and delivery wards with 16 delivery rooms, two dedicated obstetric operating rooms and four maternity wards. There were approximately 15,000 annual delivery admissions during the study period. The SZMC is a level 2 trauma center in the center of Jerusalem, Israel, with annual trauma admissions of approximately 3000 patients. The trauma center serves a population of about 2 million including the city of Jerusalem and its surroundings, and patients from the West Bank. Our trauma center data is collected and analyzed as part of the National Israeli Trauma Database.