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采用PPS法抽样,对30个县(市)儿童进行碘营养调查,以了解广西儿童碘营养的现状。结果表明,环境水含碘中位数为2.4μg/L,整个广西境内均属于缺碘地区,尚未发现高碘的局部地区。1200份学生家用碘盐含碘中位数41.3mg/kg,合格率为90.08%。其中精盐含碘中位数42.3mg/kg,合格率为91.27%,粗盐含碘中位数38.1mg/kg,合格率为85.54%,精盐含碘合格率高于粗盐(P<0.01)。360份尿碘中位数为336.10μg/L,≤20μg/L占检测人数的0.83%,≥100μg/L的占93.61%;1033名新生儿脐带血TSH中位数为2.63mIU/L,>5.0mIU/L,占检查人数15.39%;8~10岁儿童甲状腺肿大率触诊法(1200人)为14.3%,B超法(1185人)14.9%,两种检查法结果无显著性差异(P>0.5)。表现为高尿碘、高肿大率和高TSH值,说明了广西居民的碘营养水平近期指标已有明显改善,但远期效果尚未令人满意
PPS method sampling, iodine nutrition survey of 30 counties (cities) to understand the status of iodine nutrition in Guangxi children. The results showed that the environmental water containing iodine median 2.4μg / L, the territory of Guangxi are iodine-deficient areas, not found in high iodine local areas. The median iodine iodine concentration of 1200 students was 41.3mg / kg, with a pass rate of 90.08%. The median salt iodine 42.3mg / kg, with a pass rate of 91.27%, the crude salt iodine median 38.1mg / kg, the pass rate was 85.54%, salt, iodine qualified rate higher than crude Salt (P <0.01). 360 urinary iodine median 336.10μg / L, ≤ 20μg / L accounted for 0.83% of the test population, ≥ 100μg / L accounted for 93.61%; 1033 neonatal cord blood TSH median of 2 .63mIU / L,> 5.0mIU / L, accounting for 15.39% of the total number of examinees; 14.3% of the children aged 8-10 with palpation of goiter (1200), 1185 .9%, the two test results showed no significant difference (P> 0.5). The performance of high urinary iodine, high swelling rate and high TSH value, indicating that Guangxi residents recent indicators of iodine nutrition has been significantly improved, but the long-term effect has not been satisfactory