Risk factors and clinical outcomes for placenta accreta spectrum with or without placenta previa

To clarify risk factors and clinical outcomes for placenta accreta spectrum (PAS) stratified by placenta previa. We conducted registry-based multicenter cross-sectional study including 472,301 singleton deliveries between 2013 and 2015. PAS was considered as a primary outcome, as well as maternal age, parity, history of cesarean section, history of miscarriage, and assisted reproductive technology (ART) were considered as potential exposures. A...