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目的掌握湖北省碘盐新标准普及情况及食用盐碘含量浓度下调后儿童尿碘水平,为制定碘缺乏病防治策略提供依据。方法 2012-2014年全省17个市(州)103个县(市、区),按照《全国碘缺乏病监测方案(试行)》要求,采集居民户家中食用盐进行碘含量测定;采取单纯随机抽样方法(PPS)抽取30个县,每县采集8~10岁儿童尿样100份进行尿碘检测。结果 2012-2014年湖北省碘盐监测覆盖率和上报率均100%,3年的盐碘中位数分别为30、25.8、24.6 mg/kg,逐年递减,差异有统计学意义(P<0.01);儿童尿碘中位数由300.78μg/L下降至270.73μg/L,尿碘值比较差异有统计学意义(P<0.01)。结论湖北省碘盐新标准实施后,碘盐覆盖率、合格碘盐食用率均保持较高水平,盐碘中位数逐年下降。但儿童碘营养仍高于适宜水平,今后需进一步加强碘盐监测,为碘缺乏病的防治工作提供科学指导。
Objective To grasp the popularization of new iodized salt standard in Hubei Province and the level of urinary iodine in children after the iodine content of edible salt is lowered, so as to provide evidence for the prevention and control of iodine deficiency disorders. Methods From 2012 to 2014, 103 counties (cities and districts) of 17 cities (prefectures) in the province were collected for iodine content determination according to the requirements of National Monitoring Program for Iodine Deficiency Disorders (Trial Implementation) Sampling method (PPS) to extract 30 counties, each county collected 8 to 10-year-old children with 100 urine samples for urinary iodine detection. Results The coverage rate and reporting rate of iodized salt monitoring in Hubei Province between 2012 and 2014 were all 100%. The median salt and iodine concentrations in three years were 30, 25.8 and 24.6 mg / kg, respectively, decreasing year by year with significant difference (P <0.01 ). The median urinary iodine in children dropped from 300.78μg / L to 270.73μg / L, the difference was statistically significant (P <0.01). Conclusion After the implementation of the new standard for iodized salt in Hubei Province, the coverage rate of iodized salt and the rate of qualified iodized salt were all kept at a high level, and the median of salt and iodine decreased year by year. However, children’s iodine nutrition is still higher than the appropriate level in the future to further strengthen the monitoring of iodized salt for iodine deficiency disease prevention and control to provide scientific guidance.