Trend analysis on iodized salt monitoring results in Jiading District of Shanghai from 2008 to 2018

ObjectiveTo ascertain the current situation and usage changes of iodized salt in Jiading District of Shanghai from 2008 to 2018, and provide decision-making basis for adjusting corresponding intervention measures.

MethodsA total of 3 795 household salt samples were taken for salt iodine monitoring according to the "Shanghai Iodized Salt Monitoring Implementation Plan" from 2008 to 2018;the annual change percentage of the main indicators was calculated and the Joinpoint software used to analyze the trend.

ResultsFrom 2008 to 2018 in Jiading District, the non-iodized salt rate, iodized salt coverage rate, iodized salt pass rate and qualified iodized salt consumption rate were 10.78%, 89.22%, 83.05% and 74.10%.The non-iodized salt rate from 2008 to 2018 and the qualified iodized salt consumption rate from 2008 to 2011 were without obvious change trend(P>0.05).The iodized salt coverage rate, the iodized salt qualified rate and the qualified iodized salt consumption rate in 2012-2018 decreased statistically (P < 0.05).

ConclusionThe iodized salt coverage rate and the qualified iodized salt consumption rate of Jiading District of Shanghai show a downward trend in 2008-2018.The government should continue to adhere to the policy of salt iodization, strengthen the management of unqualified iodized salt.