title: Prepregnancy body mass index, gestational weight gain, and pregnancy outcomes in China.
abstract: OBJECTIVE
  To look for associations between pregnancy outcomes and prepregnancy body mass index and gestational weight gain among Han women from Shenyang province, China.
  
  
  METHODS
  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).
  
  
  CONCLUSIONS
  A high prepregnancy body mass index and excessive gestational weight gain were associated with increased risks for adverse pregnancy outcomes.
authors.affiliation: Department of Obstetrics and Gynecology, China Medical University-affiliated Shengjing Hospital, Shenyang, China.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Chen
authors.forename: Juan
authors.initials: J
authors.lastname: Du
authors.forename: Ling
authors.initials: L
authors.lastname: Shao
authors.forename: Liqiang
authors.initials: L
authors.lastname: Zheng
authors.forename: Meiyan
authors.initials: M
authors.lastname: Wu
authors.forename: Mo
authors.initials: M
authors.lastname: Ai
authors.forename: Yinling
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000328:Adult; D015992:Body Mass Index; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D050177:Overweight / Q000453:epidemiology*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D011256:Pregnancy Outcome; D012307:Risk Factors; D015430:Weight Gain; D055815:Young Adult