Analysis of iodized salt monitoring results in high iodine county and non-excessive iodine county in Jiangsu Province in 2011 / 中国地方病学杂志

ABSTRACT

Objective To investigate the supply of iodized salt in non-excessive iodine counties and iodine-free salt in excessive iodine counties at household level in Jiangsu Province so as to provide a basis for the prevention and control of iodine deficiency disorders(IDD).Methods According to the National Iodine Deficiency Disorders Monitoring Program(Trial),county(city,district) was taken as a elementary sampling unit in Jiangsu Province.Townships(towns) and administrative villages were selected by systematic sampling and random sampling in every county and households were chosen by random sampling to collect their edible salt samples.The salt iodine content in non-and excessive iodine regions was detected by direct titration method and semi-quantitative method,respectively.Results All 30 840 salt samples were collected from 106 non-excessive iodine counties,and qualified iodized salt was 30 303 copies,iodine-free salt 199 copies.Weighted by the population of counties,the rate of iodine-free salt was 0.71％,the coverage rate of iodized salt accounted for 99.29％,out of which,98.93％ was qualified and the consuming rate of qualified iodized salt was 98.23％.All 1296 salt samples were collected in 5 counties with excessive water iodine content and the coverage rate of iodine-free salt was 98.99％ (1283/1295).Conclusions The national targets for preliminary elimination of IDD have been achieved in regions of nonexcessive and excessive iodine of Jiangsu Province.But it still should be strengthen the management work of iodinefree salt in excessive iodine counties and iodine saft in non-excessive iodine counties.