Optimal Admission Cervical Dilation in Spontaneously Laboring Women

Amber M. Wood, Heather A. Frey, Methodius G. Tuuli, Aaron Caughey, Anthony O. Odibo, George A. Macones, Alison G. Cahill

Research output: Contribution to journalArticle

8 Scopus citations


Objective To estimate the impact of admission cervical dilation on the risk of cesarean in spontaneously laboring women at term. Study Design Secondary analysis of a prospective cohort study of women admitted in term labor with a singleton gestation. Women with rupture of membranes before admission, induction of labor, or prelabor cesarean were excluded. The association between cesarean and cervical dilation at admission was estimated, and results were stratified by parity. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated, using cervical dilation ≥ 6 cm as the reference group. Cesarean for arrest was secondarily explored. Results A total of 2,033 spontaneously laboring women met inclusion criteria. Women admitted at

Original languageEnglish (US)
Pages (from-to)188-194
Number of pages7
JournalAmerican Journal of Perinatology
Issue number2
StatePublished - Sep 7 2015


  • admission criteria
  • cervical dilation
  • cesarean delivery
  • labor

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

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    Wood, A. M., Frey, H. A., Tuuli, M. G., Caughey, A., Odibo, A. O., Macones, G. A., & Cahill, A. G. (2015). Optimal Admission Cervical Dilation in Spontaneously Laboring Women. American Journal of Perinatology, 33(2), 188-194. https://doi.org/10.1055/s-0035-1563711