Objective To understand the iodine nutrition status of school stage children in Shijiazhuang City,to evaluate the effect of iodine supplementation intervention for from 2017 to 2021,and to provide a basis for control and prevention of iodine deficiency disorders in Shijiazhuang City in the future.Methods A total of 200 non-residential students aged 8 to 10 years old were randomly selected each year from 21 counties(cities and districts)in Shijiazhuang City.Salt samples and random urine samples were collected from their households for the monitoring of salt iodine and urinary iodine content,respectively,and thyroid ultrasound was performed on some of the students to record the thyroid volume.Results A total of 20 399 salt samples and 20 399 urine samples from children's households were monitored from 2017 to 2021.The coverage rate of iodized salt was 93.66％(19 106/20 399),the qualified rate of iodized salt was 92.40％(17 654/19 106),and the consumption rate of qualified iodized salt was 86.54％(17 654/20 399).The median of salt iodine was 22.0mg/kg,the median urinary iodine concentration was 187.70 μg/L,and the rate of goitre was 2.06％(157/7 620)by thyroid ultrasound for children from 2017 to 2021.Conclusion School stage children are generally at appropriate iodine levels in Shijiazhuang City.The consumption of iodized salt in students'households generally complies with the national recommended standards,but there are still cases of consumption of non-iodized salt and unqualified iodized salt,which present a risk of iodine deficiency and need to strengthen market supervision.The total goiter rate in school stage children is not high,but goitre still occurred and the routine monitoring should be strengthened.
NETL
NSTL
万方数据
