Obstet Gynecol 2020 10;136(4):698-705
Departments of Obstetrics and Gynecology, University of Utah Health Sciences Center, Salt Lake City, Utah, Northwestern University, Chicago, Illinois, University of Alabama at Birmingham, Birmingham, Alabama, Stanford University, Stanford, California, Columbia University, New York, New York, Brown University, Providence, Rhode Island, University of Texas Medical Branch, Galveston, Texas, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, University of Texas Health Science Center at Houston-Children's Memorial Hermann Hospital, Houston, Texas, The Ohio State University, Columbus, Ohio, MetroHealth Medical Center-Case Western Reserve University, Cleveland, Ohio, University of Texas Southwestern Medical Center, Dallas, Texas, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado, University of Pennsylvania, Philadelphia, Pennsylvania, Duke University, Durham, North Carolina, University of Pittsburgh, Pittsburgh, Pennsylvania, and Washington University in St. Louis, St. Louis, Missouri; the George Washington University Biostatistics Center, Washington, DC; and the Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland.
Objective: To develop models to predict vaginal delivery in low-risk, nulliparous women contemplating elective induction of labor or expectant management at 39 weeks of gestation.
Methods: We conducted a secondary analysis of a randomized controlled trial of planned elective induction of labor at 39 weeks of gestation compared with expectant management for low-risk nulliparous women. Two groups were included for this analysis: 1) women who were randomized to the induction of labor group and underwent elective induction at 39 0/7-39 4/7 weeks of gestation and 2) women who were randomized to the expectant management group who experienced spontaneous labor or medically indicated delivery (including postterm). Read More