学生营养改善计划地区2013年学生维生素A营养状况  

Vitamin A deficiency among students from the National Nutrition Improvement Program for Rural Compulsory Students in 2013

作　　者：甘倩[1] 陈竞[1] 李荔[1] 徐培培[1] 杨媞媞[1] 潘慧[1] 胡小琪[1] 张倩[1] 

机构地区：[1]中国疾病预防控制中心营养与健康所,北京100050

出　　处：《中国学校卫生》2016年第5期661-663,共3页Chinese Journal of School Health

摘　　要：目的了解＂农村义务教育学生营养改善计划＂（以下简称＂学生营养改善计划＂）试点地区学生血清维生素A营养状况,为进一步改善我国贫困农村地区儿童营养健康状况提供基础数据。方法在＂学生营养改善计划＂覆盖的22个省（直辖市、自治区、新疆建设兵团）50个重点监测县,每县随机抽取小学和初中各2所,再从各年级抽取1-2个班的学生,达到每个年级40人左右。采集空腹静脉血,分离血清,用液相色谱串联质谱仪测定血清维生素A（视黄醇）。结果共测定6-19岁学生11 245名,血清维生素A平均水平为（36.6±12.7）μg/L。血清维生素A缺乏率（〈0.7μmol/L）为3.2%,维生素A亚临床缺乏率（0.7-1.05μmol/L）为29.7%,合计为32.9%。小学生维生素A缺乏率（3.9%）高于初中生（1.8%）（χ^2=39.16,P〈0.01）,西部（3.7%）高于中部（2.4%）（χ^2=14.83,P=0.00）,而男生（3.2%）与女生（3.1%）差异无统计学意义（χ^2=0.10,P〉0.05）。结论 ＂学生营养改善计划＂试点地区学生依然存在一定的维生素A缺乏及亚临床缺乏。应积极采取措施,改善学生维生素A营养状况。Objective To understand the status of vitamin A deficiency（ VAD） and sub-clinical vitamin A deficiency（ SVAD） among students from the National Nutrition Improvement Program for Rural Compulsory Students（ NNIPRCS）. Methods From key monitoring counties, two elementary schools and two middle schools were randomly selected in terms of three feeding modes; one to two classes of students were randomly selected from each school and stratified by grade. Students ＇ fasting venous blood samples were collected, LC-MS / MS method was used to determine the value of vitamin A. Results Totally 11 245 students aged from 6-19 were enrolled in this study. The average value of vitamin A was（ 36.6±12.7） μg / d L. The prevalence of VAD was3.2% and the prevalence of SVAD was 29.7%. Students from elementary schools（ 3.9%） were more likely to get VAD than students from middle schools（ 1.8%）（ P〈0.01）; Students from western areas（ 3.7%） were more likely to get VAD than students from central areas（ 2.4%）（ P = 0.00）; but no obvious differences were found between males（ 3.2%） and females（ 3.1%） students. Conclusion Vitamin A deficiency and vitamin A sub-clinical deficiency still exist in pilot areas of NNIPRCS. Interventive prevention should be adopted to improve the students＇ nutrition status.

关 键 词：维生素A 营养状况 学生 农村人口 

分 类 号：R153.2[医药卫生—营养与食品卫生学] R179[医药卫生—公共卫生与预防医学]