title: Vitamin D status of pregnant women in Shanghai, China.
abstract: OBJECTIVE
  The aims of this study were to identify the prevalence of vitamin D insufficiency in pregnant women in Shanghai, China and to determine the correlations between 25-hydroxyvitamin D (25(OH)D) and age, serum lipids, renal function, BMI, gestational weeks, and season of sampling.
  
  
  METHODS
  A total of 1695 pregnant women who visited the outpatient clinic for their first prenatal examination were included in the study.
  
  
  RESULTS
  Over 90.5% of these women had less than optimal levels of 25(OH)D. Of the 1695 women, 1162 were deficient, 372 were insufficient, only 372 were sufficient, and 5 had possible hypervitaminosis. 25(OH)D levels were negatively correlated with age, total cholesterol, low-density lipoprotein (LDL), gestational age, body weight, and BMI. They were positively correlated with urea levels. Neither parity nor season was a significant factor.
  
  
  CONCLUSIONS
  Vitamin D deficiency and insufficiency were common in pregnant Chinese women and routine screening as well as prophylactic measures should be considered.
authors.affiliation: Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China. taomf1@gmail.com
authors.forename: Minfang
authors.initials: M
authors.lastname: Tao
authors.forename: Hongfang
authors.initials: H
authors.lastname: Shao
authors.forename: Jinhong
authors.initials: J
authors.lastname: Gu
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhen
mesh_terms: D000328:Adult; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood / Q000453:epidemiology*; D011296:Prenatal Diagnosis; D015995:Prevalence; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D