Prepregnancy body mass index, gestational weight gain, and pregnancy outcomes in China

Int J Gynaecol Obstet. 2010 Apr;109(1):41-4. doi: 10.1016/j.ijgo.2009.10.015. Epub 2009 Dec 16.


Objective: To look for associations between pregnancy outcomes and prepregnancy body mass index and gestational weight gain among Han women from Shenyang province, China.

Method: A total of 2586 women were distributed across 4 prepregnancy categories according to the Chinese classification of body mass index, and to 4 end-of-pregnancy categories according to median weekly gestational weight gain.

Results: The risks for gestational hypertension, pre-eclampsia, gestational diabetes, and preterm premature rupture of membranes were higher for those who were overweight or obese before becoming pregnant (P<0.05). Moreover, a gestational weight gain of 0.50 kg per week or greater was associated with a higher risk for gestational hypertension, preterm premature rupture of membranes, and fetal macrosomia (P<0.05). Women in the highest quartile for weight gain (>or=0.59 kg per week) were at higher risk for pre-eclampsia (P<0.05).

Conclusion: A high prepregnancy body mass index and excessive gestational weight gain were associated with increased risks for adverse pregnancy outcomes.

MeSH terms

  • Adult
  • Body Mass Index*
  • China / epidemiology
  • Female
  • Humans
  • Middle Aged
  • Overweight / epidemiology*
  • Pregnancy
  • Pregnancy Complications / epidemiology*
  • Pregnancy Outcome
  • Risk Factors
  • Weight Gain*
  • Young Adult