LK Admon, VK Dalton, GE Kolenic, SL Ettner… - JAMA …, 2021 - ncbi.nlm.nih.gov
Results Of 595 237 included childbearing individuals, the mean (SD) age at delivery was
31.9 (6.4) years. A total of 40 568 individuals (6.8%) were Asian, 52 613 (8.6%) were Black …