title: Association between Prenatal One-Hour Glucose Challenge Test Values and Delivery Mode in Nondiabetic, Pregnant Black Women.
abstract: OBJECTIVE
  We examined the association between 1-hour glucose challenge test (GCT) values and risk of caesarean section.
  
  
  METHODS
  A prospective cohort study recruited 203 pregnant Black women to participate. At ~28 weeks of gestation, participants underwent a routine 1-hour 50 g GCT to screen for gestational diabetes mellitus. Logistic regression was used to examine the association between 1-hour GCT value and delivery mode.
  
  
  RESULTS
  Of the 158 participants included, 53 (33.5%) delivered via C-section; the majority (n = 29; 54.7%) were nulliparous. Mean 1-hour GCT values were slightly, but not significantly, higher among women delivering via C-section; versus vaginally (107.8 ± 20.7 versus 102.4 ± 21.5 mg/dL, resp.; P = 0.13). After stratifying by parity and adjusting for maternal age, previous C-section, and prepregnancy body mass index, 1-hour GCT value was significantly associated with increased risk of C-section among parous women (OR per 1 mg/dL increase in GCT value = 1.05; 95% CI OR: 1.00, 1.05; P = 0.045).
  
  
  CONCLUSIONS
  Even slightly elevated 1-hour 50 g GCT values may be associated with delivery mode among parous Black women.
authors.affiliation: Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI 48202, USA.
authors.forename: Jerel M
authors.identifier: 0000-0002-9884-7909
authors.initials: JM
authors.lastname: Ezell
authors.affiliation: College of Nursing, Wayne State University, Detroit, MI 48202, USA.
authors.forename: Rosalind M
authors.initials: RM
authors.lastname: Peters
authors.affiliation: Department of Endocrinology, Diabetes, and Bone and Mineral Disorders, Henry Ford Health System, Detroit, MI 48202, USA.
authors.forename: Jessica E
authors.initials: JE
authors.lastname: Shill
authors.affiliation: Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI 48202, USA.
authors.forename: Andrea E
authors.identifier: 0000-0001-8272-4448
authors.initials: AE
authors.lastname: Cassidy-Bushrow
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D015992:Body Mass Index; D002585:Cesarean Section / Q000706:statistics & numerical data*; D016640:Diabetes, Gestational / Q000097:blood*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D016015:Logistic Models; D008824:Michigan; D010298:Parity; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000208:ethnology*; D011295:Prenatal Care; D011446:Prospective Studies; D012307:Risk Factors; D055815:Young Adult