全国碘盐监测简化方案的可行性研究

A pilot study on the feasibility of simplified scheme of national iodized salt monitoring program

目的对现有全国碘盐监测方案提出简化办法并探讨简化方案的可行性。方法选取碘盐覆盖率不同水平的4省8县市,同时按照现行方案和简化方案开展碘盐监测,调查居民户碘盐覆盖情况。对两方案的结果进行比较,对简化方案的可行性进行分析。结果现行方案监测居民户盐样2306份,碘盐覆盖率88.1%,合格碘盐食用率84.8%;简化方案监测居民户盐样2400份,碘盐覆盖率85.2%,合格碘盐食用率79.8%。两种方案监测宁化、沙县、瓦房店、庄河和民乐县碘盐覆盖率与合格碘盐食用率均>90%,差异无统计学意义;临夏、乌兰和都兰县水平相对较低,其中都兰县碘盐覆盖率、合格碘盐食用率和临夏县的合格碘盐食用率两方案的结果差异均有统计学意义(P<0.01)。总体样本两方案结果差异也有统计学意义(P<0.01)。结论简化方案具有较好的可操作性,在碘盐覆盖率较高地区具有一定推广意义;而对非碘盐率较高、分布不均匀的地区及全国整体水平上,简化方案和现行方案间差异显著,尚不适宜推广。

Objective To draft out the simplified scheme of iodized salt monitoring program to compare with the current scheme, and to study its feasibility. Methods 8 counties from 4 provinces were selected at different coverage rate of iodized salt. Conduct the monitoring program using the current scheme and the simplified scheme, then compare the results. Results The monitoring results of the current scheme showed the coverage rate of iodized salt and adequate iodized salt were 88.1 96 and 84.8 96 and the data of the simplified scheme were 8.5.2.% and 79.8 % respectively. Five counties reached above 90 % of both the coverage rates of iodized salt and adequate iodized salt and the results showed no significant difference between the two schemes. The rates of other three counties were low, and the difference was significant between Dulan and Linxia counties. To the whole samples, the difference was also significant. Conclusion The simplified scheme could be applied to those that the coverage rate of iodized salt was quite high or the non-iodized salt was well-distrbuted. However, for those areas with low coverage rate, it might not be suitable. As for the whole nation, it might not be popularized due to the gap of coverage rate between western and eastern areas.