title: [Study on the age-appropriate hemoglobin cut-offs for anemia screening of women of child-bearing age in China].
abstract: OBJECTIVE
  To discuss the age-appropriate hemoglobin cut-offs for anemia screening of women of child-bearing age in China.
  
  
  METHODS
  The authors selected a stratified random sample of 619 women aged 20-45 which from the 2002 China National Nutrition and Health Survey (CNNHS) in 2002. According to a certain concentration gradient of hemoglobin, stratified analysis was used to define the critical value of hemoglobin according to the correlation between iron nutritional indexes and hemoglobin as well as these indices changes trend in the process of iron deficiency anemia.
  
  
  RESULTS
  C-Reactive Protein values were all in normal range (< or = 8 mg/L). Hb concentrations correlated positively with lg (sTfR/SF) and negatively with serum iron, lgSF as well as TS, respectively (P < 0.05). lgSF and sTfR/SF were selected in the regression analysis which were the best indicators to explain Hb. These two indices changed the most significantly at the point of 110 g/L of Hb concentration.
  
  
  CONCLUSIONS
  The age-appropriate cut-off values of Hb in anemia screening might be 110 g/L for women of child-bearing age in China.
authors.affiliation: Institute for Nutrition and Food Safety, China CDC, Beijing 100050, China. wuqinky@126.com
authors.forename: Qin
authors.initials: Q
authors.lastname: Wu
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: Yuejiao
authors.initials: Y
authors.lastname: Wang
authors.forename: Jianhong
authors.initials: J
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Yang
authors.forename: Lichen
authors.initials: L
authors.lastname: Yang
mesh_terms: D000328:Adult; D018798:Anemia, Iron-Deficiency / Q000453:epidemiology / Q000517:prevention & control*; D002681:China / Q000453:epidemiology; D005260:Female; D006454:Hemoglobins / Q000592:standards*; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D012016:Reference Values; D061250:Transferrins / Q000097:blood; D055815:Young Adult
chemical_list: D006454:Hemoglobins; D061250:Transferrins