6岁以下儿童不同年龄间维生素A缺乏情况对比研究

Survey on Vit A deficiency in children under-6-years in Hebei Province

目的:了解6岁以下儿童不同年龄间维生素A(VitA)缺乏发生率的分布特点。方法:采用随机抽样方法,对河北省的9个市县(城市3个,1类县1个,2类县3个,3类县2个)进行调查,内容包括家庭和儿童营养问卷,收集儿童血清。儿童血清VitA标本全部在首都儿科研究所用荧光分析仪检测。结果:9个市县共调查6岁以下儿童1473人(城市505人,农村968人,男773人,女700人)。血清VitA检测结果:6岁以下儿童血清维生素A含量平均水平为31.9μg/dl,血清维生素A含量<20μg/dl的肯定缺乏发生率为4.4%;6个月以内的婴儿VitA亚临床缺乏发生率为21.2%,可疑缺乏为56.1%。年龄有显著性差异。结论:河北省属于轻度维生素A缺乏地区,低年龄组儿童缺乏情况较严重,需要补充维生素A。

Objective： To study the ratio and distribution of Vit A deficiency （VAD） of children under six years in Hebei Provinc~ Methods： Nine cities and counties of Hebei Province （three cities, one first - class county, three second - class counties, two third - class counties） were selected with stratified cluster sampling for survey. The content included questionnaire about fanfily and children nutrition status. Blood specimens of children were collected for measuring serum level of VA with fluorescent spectrophotometry. Results： 1 473 children under six years were surveyed in 9 cities and counties （505 in urban area and 968 in rural area with 773 males, 700 females）. The serum level of VA analysis result： the average serum level of VA for children under six years was 31.9 μg/dl, the ratio of children with serum VA less than 20 μg/dl was 4. 4% , the VA sub - clinic deficiency ratio for babies under six months was 21.2% ; There was significant difference in VAD occurrence ratios between ages. Condusion： This province is a region where VA lacks slightly, but severely deficient exist in younger children, which needs VA supplementation.