The coverage rate of iodized salt and the nutritional status of school-aged children before and after adjustment of salt iodine concentration in Haishu District, Ningbo City, Zhejiang Province
10.3760/cma.j.issn.2095-4255.2017.12.006
- VernacularTitle:食盐加碘标准调整前后浙江省宁波市海曙区居民碘盐覆盖率和学龄儿童碘营养状况分析
- Author:
Dingyi BO
1
;
Jun JIANG
;
Qianru TANG
;
Haibin WANG
;
Xuefei ZHAO
Author Information
1. 宁波市海曙区疾病预防控制中心疾病控制科
- Keywords:
Iodine;
Salts;
Child;
Urine
- From:
Chinese Journal of Endemiology
2017;36(12):883-887
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the coverage rate of iodized salt and the nutritional status of schoolaged children before and after adjustment of salt iodine concentration in Haishu District,Ningbo City.Methods The observation period (2010-2016) was divided into three sub-periods:before the adjustment (2010,2011),adjustment period (2012-2014) and after the adjustment (2015,2016).Household salt samples and urine samples of school-aged children aged 8-10 were collected during the 3 periods in Haishu District,Ningbo City,and the iodized salt coverage rate,qualified iodized salt consumption rate,urinary iodine concentration were determined.Results Totally 600,900 and 615 household salt samples were collected in the 3 periods,respectively.The medians of salt iodine in the 3 periods were 27.30,23.50 and 23.10 mg/kg;while the iodized salt coverage rates were 97.83％ (587/600),94.67％ (852/900) and 84.72％ (521/615),and the qualified iodized salt consumption rates were 96.50％ (579/600),92.11％ (829/900) and 74.63％ (459/615),respectively.There were significant differences in the iodized salt coverage rates and qualified iodized salt consumption rates among the 3 periods (x2 =86.13,162.57,P ＜ 0.01);and significant decreases of the iodized salt coverage rates and qualified iodized salt consumption rates were observed in the 3 periods (x2trend =77.34,141.11,P ＜ 0.01).The median urinary iodine concentration of the school-aged children in the 3 periods were 171.18,161.95 and 186.07 μg/L;the differences of urinary iodine were statistically significant among the 3 periods (H =11.81,P ＜ 0.01).Conclusions In Haishu District,significant decreases of the iodized salt coverage rates and qualified iodized salt consumption rates are observed after the adjustment of salt iodine concentration.However,the iodine nutrition is adequate in school-aged children.
