义乌市学龄前儿童血清微量营养素水平调查

Micronutrient status of preschool children in Yiwu,China

目的了解学龄前儿童血清微量营养素水平,为进一步改善学龄前儿童营养状况提出合理建议。方法对学龄前期儿童开展抽样调查,并检测其血清微量营养素水平,使用SPSS 17.0统计软件进行结果分析。结果调查对象的血清维生素A、铜、锌、钙、镁、铁的中位数分别为(1.90±1.05)μmol/L,(23.3±3.64)mmol/L,(84.3±39.4)μmol/L,(1.66±0.33)mmol/L,(1.59±0.46)mmol/L,(8.90±2.48)mmol/L。血清维生素A、铜、锌、钙、镁、铁在参考值范围内的儿童分别占65.92%、99.53%、89.94%、95.15%、96.92%和97.87%。血清维生素A在各年龄组的参考值范围内的分布差异、在城镇和农村的参考值范围内的分布差异均有统计学意义(P<0.05)。结论应根据儿童不同的年龄段,适时开展微量营养素水平检测,以期早发现、早预防学龄前儿童的微量营养素缺乏,及时有效地补给各种营养素。

Objective To better understand the micronutrient status of preschool children.Methods A total of 845 preschool children were randomly selected and blood samples were collected to measure serum micronutrient level such as zinc,iron,calcium,vitamin A and others.SPSS 17.0 software was used to analyze the data.Results The medians of vitamin A,copper,zinc,calcium,magnesium and iron were 1.90±1.05 μmol/L,23.3±3.64 mmol/L,84.3±39.4 μmol/L,1.66±0.33 mmol/L,1.59±0.46 mmol/L and 8.90±2.48 mmol/L respectively.There were only 65.92% of children whose vitamin A level was in the normal range,while more than 90% were in reference interval in terms of serum levels of copper,zinc,calcium,magnesium,and iron.There were significant differences for vitamin A among different age-groups and children from rural and urban areas（P〈0.05）.Conclusions There are 35% of preschool children surveyed are vitamin A deficient,coupled with a certain number of other micronutrient deficiencies indicating that early micronutrient supplementary should be given to those preschool children.