Pregnancy complications and outcomes among overweight and obese nulliparous women

Am J Public Health. 2001 Mar;91(3):436-40. doi: 10.2105/ajph.91.3.436.


Objectives: This study examined the associations between prepregnancy weight and the risk of pregnancy complications and adverse outcomes among nulliparous women.

Methods: We conducted a population-based cohort study with 96,801 Washington State birth certificates from 1992 to 1996. Women were categorized by body mass index. Multivariate logistic regression was performed.

Results: The rate of occurrence of most of the outcomes increased with increasing body mass index category. Compared with lean women, both overweight and obese women had a significantly increased risk for gestational diabetes, preeclampsia, eclampsia, cesarean delivery, and delivery of a macrosomic infant.

Conclusions: Among nulliparous women, not only prepregnancy obesity but also overweight increases the risk of pregnancy complications and adverse pregnancy outcomes.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Body Mass Index
  • Body Weight
  • Cesarean Section
  • Cohort Studies
  • Diabetes, Gestational / etiology
  • Eclampsia / etiology
  • Female
  • Fetal Macrosomia / etiology
  • Humans
  • Obesity / complications*
  • Odds Ratio
  • Parity*
  • Pre-Eclampsia / etiology
  • Pregnancy
  • Pregnancy Complications*
  • Pregnancy Outcome
  • Risk Factors