湖南省居民户食盐碘含量变化趋势及影响因素的研究

Study on Changing Trends and Influential Factors of Salt-iodine Concentration in Residents of Hunan Province

目的了解湖南省居民户盐碘含量的变化趋势和主要影响因素。方法每年以县为单位按照《全国碘盐监测方案》来抽样,按照地域因素分层,采用横断面分析和队列研究方法,运用SPSS软件对数据进行重复测量资料方差分析。结果湖南省居民户食盐碘含量呈历年降低趋势。邻省交界县(市、区)特别是环洞庭湖区县(市、区)食盐碘含量低于其他内陆县(市、区)。结论碘盐生产企业的加碘浓度下降是造成居民户盐碘含量下降的直接原因,邻省交界地区特别是环洞庭湖区存在非碘盐冲击市场的现象。

Objective To understand the changing trends and influential factors of salt- iodine concentration in the residents of Hunan Province. Methods According to ＂The Scheme of National Iodized Salt Monitoring＂, yearly sampling was used on every county. Grouping the counties by region factors, cross - sectional study and cohort study were used in the study. SPSS was used to do Repeated Measures Anova. Results The salt- iodine concentration in the residents of Hunan Province tended to decrease year by year. The counties which are contiguous to the neighbor provinces, especially the counties around Dongting Lake showed lower averages than those of other inland counties. Conclusions The reducing of the iodine concentration in iodized- salt productive enterprises is the main reason of the lower averages of salt- iodine concentration. The counties which are contiguous to the neighbor provinces, especially the counties around Dongting Lake are found that non- iodized salt impacts the markets.