Andrikopoulou M, Wen T, Sheen JJ, et al. - Researchers sought to describe medical, obstetric, and demographic risk factors linked with nulliparous, term, singleton, vertex (NTSV) cesarean birth via performing a cross sectional study of NTSV births in 2016‐2018 US natality data. Of 11,622,400 deliveries, 3,764,707 met NTSV criteria. Among deliveries meeting NTSV criteria, the cesarean rate was 25.9%. Increased risk was observed in correlation with maternal age 35‐39 (aRR 1.51) and 40‐54 (aRR 2.03) compared with age 19‐34, BMI 25 to < 30 kg/m ² (aRR 1.32), 30 to < 35 kg/m ² (aRR 1.57), 35 to < 40 kg/m ² (aRR 1.82), and ≥ 40 kg/m ² (aRR 2.17) compared with 18.5‐24.9 kg/m ², and pregestational diabetes (aRR 1.54). Overall these findings suggest that BMI, maternal age, and medical conditions are important risk factors for cesarean among NTSV births.