[Study on the age-appropriate hemoglobin cut-offs for anemia screening of women of child-bearing age in China].

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. CONCLUSION:The age-appropriate cut-off values of Hb in anemia screening might be 110 g/L for women of child-bearing age in China.