Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006
CONCLUSION: Labor is longer in the modern obstetrical cohort. The benefit of extensive interventions needs further evaluation. Published by Mosby, Inc. OBJECTIVE: The objective of the study was to examine differences in labor patterns in a modern cohort compared with the 1960s in the United States. RESULTS: Compared with the CPP, women in the CSL were older (26.8 +/- 6.0 vs 24.1 +/- 6.0 years), heavier (body mass index 29.9 +/- 5.0 vs 26.3 +/- 4.1 kg/m(2)), had higher epidural (55% vs 4%) and oxytocin use (31% vs 12%), and cesarean delivery (12% vs 3%). First stage of labor in the CSL was longer by a median of 2.6 hours in nulliparas and 2.0 hours in multiparas, even after adjusting for maternal and pregnancy characteristics, suggesting that the prolonged labor is mostly due to changes in practice patterns. STUDY DESIGN: Data from pregnancies at term, in spontaneous labor, with cephalic, singleton fetuses were compared between the Collaborative Perinatal Project (CPP, n = 39,491 delivering 1959-1966) and the Consortium on Safe Labor (CSL; n = 98,359 delivering 2002-2008).
English
0002-9378
*Delivery, Obstetric/td [Trends] *Labor, Obstetric/ph [Physiology] Adult Age Factors Body Mass Index Delivery, Obstetric/mt [Methods] Delivery, Obstetric/sn [Statistics & Numerical Data] Female Humans Labor Stage, First Labor Stage, Second Linear Models Multivariate Analysis Parity Physician's Practice Patterns Pregnancy Pregnancy Outcome Retrospective Studies Time Factors United States
MedStar Washington Hospital Center
Obstetrics and Gynecology, Maternal-Fetal Medicine
Journal Article Research Support, N.I.H., Intramural