title: Micronutrients deficiency and associated sociodemographic factors in Chinese children.
abstract: BACKGROUND
  Although the prevalence of malnutrition has decreased, micronutrient deficiency still exists among children. While iron level has been studied, limited information on serum levels of zinc in Chinese children is available. This study aims to describe the status of micronutrients and its association with sociodemographic factors, and to assess associated risk factors.
  
  
  METHODS
  A cross-sectional study was performed on 1375 Chinese preschool children. Venous blood samples were collected and analyzed for zinc and iron by atomic absorption spectrophotometry. Sociodemographic information was obtained from self-administered questionnaires given to the parents.
  
  
  RESULTS
  The high prevalence of low serum zinc (38.2%) and iron (24.3%) was found. Children from rural preschools had the lowest zinc levels, whereas those from urban preschools had the lowest iron levels. Children living in small houses had the highest prevalence of low serum zinc (47.1%), and children from small families (≤3 persons) had a higher prevalence of low serum zinc than those from large families (41.8% vs. 34.1%).
  
  
  CONCLUSIONS
  Our findings in the recent socioeconomic development of China suggest the need for continuous monitoring of nutritional factors and highlight the importance of public health implication in preschool children even in developed regions.
authors.affiliation: School of Nursing, University of Pennsylvania, 418 Curie Blvd., Philadelphia, Pennsylvania 19104, USA. jhliu@nursing.upenn.edu
authors.forename: Jianghong
authors.initials: J
authors.lastname: Liu
authors.forename: Yue-Xian
authors.initials: YX
authors.lastname: Ai
authors.forename: Alexandra
authors.initials: A
authors.lastname: Hanlon
authors.forename: Zumin
authors.initials: Z
authors.lastname: Shi
authors.forename: Barbra
authors.initials: B
authors.lastname: Dickerman
authors.forename: Charlene
authors.initials: C
authors.lastname: Compher
mesh_terms: D002675:Child, Preschool; D002681:China; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D000090463:Iron Deficiencies; D008297:Male; D018977:Micronutrients / Q000172:deficiency*; D012307:Risk Factors; D012959:Socioeconomic Factors; D015032:Zinc / Q000172:deficiency*
chemical_list: D018977:Micronutrients; D015032:Zinc