title: [The vitamin D nutritional status in Chinese urban women of child-bearing age from 2010 to 2012].
abstract: Objective:To evaluate the vitamin D nutritional status in Chinese women of child-bearing age by analyzing serum 25-hydroxyvitamin D level in 2010-2012.Methods:Data were obtained from the China Nutrition and Health Survey in 2010-2012. Using cluster sampling and proportional stratified random sampling, 1 514 women of child-bearing age (18-44 years old) from 34 metropolis and 41 small and medium-sized cities were included in this study. Demographic information was collected by questionnaire and serum 25-hydroxyvitamin D concentration was determined by radioimmunoassay, in accordance with the 2010 Institute of Medicine of the National Academies standards. We compared differences in vitamin D levels, specifically serious deficiency, lack of deficiency, insufficiency, and excess.Results:The overall serum 25-hydroxyvitamin D level of Chinese urban women of child-bearing age (P(50) (P(25)-P(75))) was 20.1 (15.1-26.3) ng/ml; minorities had a significantly higher serum 25-hydroxyvitamin D level of 22.0 (15.9-27.5) ng/ml compared with women of Han nationality (19.8 (14.9-26.2) ng/ml) (χ(2)=7.02,P=0.008). The proportions of women with serious deficiency, lack of deficiency, insufficiency, and excess vitamin D were 11.6% (n=175), 37.9% (n=574), 35.1% (n=531), and 0.3% (n=5), respectively. Only 15.1% (n=229) of women of child-bearing age had normal vitamin D nutritional status. No significant differences in vitamin D nutritional status were observed according to age, body mass index, city, nationality, educational level, marital status, or household income per capita (P>0.05).Conclusion:Most Chinese urban women of child-bearing age have poor vitamin D levels and require vitamin D supplementation.
authors.affiliation: National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention; Key Laboratory of Trace Element Nutrition, National Health and Family Planning Commission, Beijing 100050, China.
authors.forename: J X
authors.initials: JX
authors.lastname: Lu
authors.forename: X B
authors.initials: XB
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: Y C
authors.initials: YC
authors.lastname: Hu
authors.forename: C F
authors.initials: CF
authors.lastname: Yun
authors.forename: W D
authors.initials: WD
authors.lastname: Li
authors.forename: R
authors.initials: R
authors.lastname: Wang
authors.forename: Y H
authors.initials: YH
authors.lastname: Yang
authors.forename: D Q
authors.initials: DQ
authors.lastname: Mao
authors.forename: J H
authors.initials: JH
authors.lastname: Piao
authors.forename: X G
authors.initials: XG
authors.lastname: Yang
authors.forename: L C
authors.initials: LC
authors.lastname: Yang
mesh_terms: D000293:Adolescent; D000328:Adult; D044466:Asian People / Q000706:statistics & numerical data; D015992:Body Mass Index; D002648:Child; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D009749:Nutrition Surveys; D009752:Nutritional Status; D015995:Prevalence; D011863:Radioimmunoassay; D014505:Urban Population; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000032:analysis / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000453:epidemiology*; D055815:Young Adult
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: China; Cross-sectional studies; Vitamin D; Women