浙江省7～12岁学龄儿童维生素A缺乏情况调查分析

Study and analysis on Vitamin A deficiency for children of school age from 7 to 12 years old in Zhejiang Province

目的调查分析浙江省7～12岁学龄儿童维生素A(VA)缺乏情况。方法以浙江省1799名7～12岁学龄儿童为研究对象,检测血浆VA,同时进行医学体检和血红蛋白(Hb)含量测定。结果学龄儿童血浆VA均值为(34.02±9.92)μg/dL,临床VA缺乏(VAD)0例,亚临床VA缺乏(SVAD)患病率5.2%,可疑SVAD患病率35.7%。血浆VA水平在不同年龄组以及城乡之间差别显著,SVAD患病率在城乡之间差异显著,可疑SVAD患病率则在城乡以及性别间差异显著。在不同血浆VA水平组间,贫血患病率差异不明显,而超重肥胖率则差异显著。结论浙江省学龄儿童VAD现象已少见,但还存在SVAD。患SVAD及可疑SVAD的学龄儿童也是今后维生素A缺乏防治的主要对象。

Objective The study was designed to study and analyze Vitamin A （VA） deficiency for children of school age from 7 to 12 years in Zhejiang Province. Methods There were 1799 children of school age from 7 to 12 years old in Zhejiang Province taken as the object of study, and their plasma VA was tested, and medical physical examination and haematoglobin （Hb） determination conducted at the same time. Results The plasma VA for children of school age averaged （34.02± 9.92） μg/dL. There was no case of clinical VA deficiency （VAD）, while the incidence rate of subclinical vitamin A deficiency （SVAD） were 5.2%, and that of suspected SVAD 35.7%. The difference of plasma VA level among different age groups and between urban and rural areas was significant, and the difference of prevalence rate of SVAD between urban and rural areas, as well as that of suspected SVAD between urban and rural areas and between male and female, was also significant. Among different groups of plasma VA level, the difference of anemia prevalence was not remarkable, but the difference of hypergravity rate was notable. Conclusion VAD for children of school age in Zhejiang Province has been rare, but SVAD still exists. The children with SVAD and suspected SVAD should be the main object for future prevention and control of Vitamin A deficiency.