重庆市食盐加碘浓度下调的正确性

发布时间：2018-06-22 13:16

  本文选题：盐碘 + 尿碘　； 参考：《中国地方病防治杂志》2017年01期

【摘要】：目的验证2012年盐碘浓度下调的正确性。方法盐碘浓度下调前(2011)与后2年(2014),每个区县按东、西、南、北、中5个方位各随机抽取1个镇(街道)的4个村或居委会,分别采集15户居民食盐,定量检测盐碘;以"PPS"抽样法抽取全市30个单位所在区县,再抽取1所小学40-50名8-10岁儿童,男女各半,年龄均衡,采集儿童尿液和家庭食用盐检测碘含量,用B超法检查儿童甲状腺;频率指标和中位数用χ~2检验、盐碘含量用t检验作统计学分析,P0.05为有显著性差异。结果居民户和儿童家庭碘盐覆盖率2011年为99.6%和99.7%,2014年为99.6%和98.8%,居民户相同,儿童家庭变化显著(χ~2=6.093.84,P0.05),盐碘平均含量2011年为31.7mg/kg和30.5mg/kg,2014年为26.7mg/kg和26.2mg/kg,显著减少5mg/kg和4.3mg/kg(t=70.11、19.502.58,P0.01);儿童尿碘中位数2011年为254.1μg/L,2014年为222.7μg/L,显著下降31.4μg/L(χ~2=23.456.63,P0.01),2011年和2014年尿碘频数50μg/L、50μg/L-、100μg/L-、200μg/L-和≥300μg/L比例分别为2.4%和2.9%、6.9%和8.3%、23.3%和30.8%、30.9%和30.7%、36.5%和27.3%,100μg/L-组显著上升,≥300μg/L组显著下降(χ~2=20.45、28.396.63,P0.01),其他无显著变化(χ~2均3.84,P0.05);儿童甲状腺肿大率2011年为5.5%,2014年为3.2%,显著下降41.8%(χ~2=8.796.63,P0.01)。结论 2012年重庆市食盐加碘浓度由2011年的35mg/kg下调至30mg/kg后,儿童尿碘中位数由254.1μg/L降至222.7μg/L,甲状腺肿大率由5.5%降至3.2%,一般人群碘营养趋于适宜状态,证明2012年的盐碘浓度下调是正确的。
[Abstract]:Objective to verify the accuracy of salt iodine concentration down-regulation in 2012. Methods before (2011) and after 2 years (2014), salt iodine concentrations were randomly selected from 4 villages or neighborhood committees of one town (street) in each district and county. Salt iodine was measured quantitatively in 15 households. 30 units in the whole city were sampled by "PPS" sampling method, and 40 to 50 children aged 8 to 10 years old, half male and half male, were selected from a primary school. The children's urine and household edible salt were collected to detect the iodine content, and the thyroid gland of children was examined by B ultrasonic method. The frequency index and median were tested by 蠂 ~ 2 test, and the salt iodine content was statistically analyzed by t test (P0.05). Results the iodized salt coverage of households and children's households was 99.6% and 99.7% in 2011 and 99.6% and 98.8% in 2014. 鍎跨�ュ�跺涵鍙樺寲鏄捐憲(蠂~2=6.093.84,P0.05),鐩愮�樺钩鍧囧惈閲�2011骞翠负31.7mg/kg鍜，

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