上海市区学龄儿童尿碘水平调查

Urinary iodine levels of school age children in Shanghai

应用温和酸消化法对上海市区１４２７名五年级学生进行了尿碘测定。结果显示，尿碘中位数为７１．２７μｇ／Ｌ，尿碘值＞１００μｇ／Ｌ者所占比例为３１．８９％。男女学生的尿碘中位数分别为７８．４１μｇ／Ｌ和６３．８７ｇ／Ｌ，有非常显著的差异（μ＝４．８８，Ｐ＜０．００１）。１０个市区学龄儿童尿碘中位数范围为６０．８９～１００．１５μｇ／Ｌ；按ＷＨＯ／ＵＮＩＣＥＦ／ＩＣＣＩＤＤ的判别标准评估本市有９／１０的区为轻度缺碘地区。此外，午后收集尿样的碘浓度（７９．０５μｇ／Ｌ）显著高于上午收集的尿样（６５．８５μｇ／Ｌ），且前者尿碘频数分布向高值偏移。

A survey on the urinary iodine level was carried out in 1427 school age children of Shanghai with mild acid digestion test in 1994. The results showed that the overall median value of casual urinary iodine was 71.27μg/L, and the percentage of the urinary iodine values≥100μg/L was 31.89%(455/1427). There was significant different median value between males (78.41μg/L) and females (63.87μg/L). The median value in 10 urban districts varied from 60.89～100.15μg/L and 9/10 districts contracted mild IDD based on median value of urinary iodine (mild IDD:50～99μg/L) recommended by WHO/UNICEF/ICCIDD, which indicated that iodine deficiency exists in school-age children of Shanghai. The median value for school-age children whose urinary samples collected in afternoon (79.05μg/L) was found much higher than that in morning (65.85μg/L), and the former percentage of the urinary iodine value slanted to high value, which indicated that the iodine content of casual urine was probably affected by urinary volume. Further investigations are needed.