The variation of antenatal corticosteroids administration for the singleton preterm birth in China, 2017 to 2018

Abstract Background The administration of antenatal corticosteroids (ACS) to women who are at risk of preterm birth has been proven to reduce not only the mortality, but also the major morbidities of the preterm infants. The rate of ACS and the risk factors associated with ACS use in Chinese population is unclear. This study aimed to investigate the rate of ACS use and the associated perinatal factors in the tertiary maternal centers of China. Methods Data for this retrospective observational study came from a clinical database of preterm infants established by REIN-EPIQ trial. All infants born at