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The intergenerational predisposition to operative delivery.

AbstractOBJECTIVE:
To determine the risk of cesarean delivery for women who themselves were born via operative delivery.
METHODS:
A linked data base was constructed between the birth certificates of individuals born in Utah during 1947-1957 (parental cohort) and who subsequently became a parent of offspring born in Utah between 1970-1991 (offspring cohort). Parental cohort women (cases) who had been delivered operatively (cesarean delivery, mid- or high forceps) as well as women who had a sibling delivered by an operative procedure were matched (1:2) with parental-cohort women born by spontaneous vaginal delivery (controls). Both cases and controls were selected based on having a record of at least one delivery in Utah during 1970-1991.
RESULTS:
Women who were delivered by cesarean were at increased risk of subsequently delivering their children by cesarean (odds ratio [OR] 1.41, 95% confidence interval [CI] 1.18-1.70; P < .001). Progressive risk was associated with parental delivery by mid- or high forceps (OR 1.72, 95% CI 1.20-2.47; P = .004), parental cesarean because of cephalopelvic disproportion alone (OR 1.83, 95% CI 1.16-2.88; P = .01), or parental cesarean for dysfunctional labor (OR 5.97, 95% CI 1.5-23.6; P < .001). The attributable risk for cesarean delivery to the contemporary population is 3.5%.
CONCLUSION:
An intergenerational predisposition to cesarean delivery exists.
AuthorsM W Varner, A M Fraser, C Y Hunter, P S Corneli, R H Ward
JournalObstetrics and gynecology (Obstet Gynecol) Vol. 87 Issue 6 Pg. 905-11 (Jun 1996) ISSN: 0029-7844 [Print] United States
PMID8649696 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
Topics
  • Cesarean Section (statistics & numerical data)
  • Cohort Studies
  • Confidence Intervals
  • Delivery, Obstetric
  • Dystocia (genetics)
  • Extraction, Obstetrical
  • Female
  • Humans
  • Infant, Newborn
  • Male
  • Obstetric Labor Complications
  • Odds Ratio
  • Pregnancy
  • Risk Factors

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