After Salt Iodization Suzhou Children’s Iodine Nutritional Status Investigation And Analysis

Objective In2000the country began to implement GB5461-2000edible saltiodine content standard，the production enterprise to35±15mg/kg level of processing，the survey aims to analysis of suzhou city after universal salt iodization in2000，bybetween2005～2012of8～10years old school-age children iodine nutritional status ofthe investigation，to determine children’s urine iodine and its corresponding salt iodinecontent，evaluation of iodine in table salt was for idd prevention and control of theactual effect，compare the consumption of different concentrations of iodized salt iodinenutritional status in children，prediction of iodine salt iodine nutritional status afteradjusting possible children，strategies and measures for prevention and control of saltiodization idd adjustment provides the basis.Method Collected from2005to2012in suzhou for condition monitoring of fourprovincial idd survey data, use status survey method, sampling with PPS (probabilityproportional sampling method according to the population capacity) sampling, eachrandomly deals1school, each school students50randomly selected8~10years old, atotal of1347students accept the urine iodine and salt iodine test.1.1347cases of students of salt iodine and corresponding urinary iodine hascarried on the correlation analysis.2.1347salt sample for iodized salt coverage, percent of pass and the rate ofqualified iodized salt consumption analysis, the corresponding urine urine iodinemedian statistical analysis.3. The data obtained in monitoring, according to the25±5mg/kg and40±10mg/kg two iodine concentration of salt, to detect objects are grouped, respectively tocompare different groups of children urine iodine median. Result1.Through correlation regression， correlation coefficient r=0.161，n=1347，r is a positive number indicates positive correlation.The correlation coefficientof significance test，P<0.001.Salt iodine and urinary iodine were positively correlated.Significance test of regression coefficient，r=0.161，r2=0.026，the regression coefficientb=2.328，through analysis of variance F=35.997，P=0.000，regression coefficient wasvery significant， regression equation is effective.The regression equation is：=180.294+2.328x.2.The school-aged children in the age of8～10，2005survey of143children urinary iodine median292.27ug/L，2007survey of144children urinaryiodine median267.04ug/L，2009survey of460children urinary iodine median of252.75g/L，2012survey of600children urinary iodine median221.31ug/L;In2005，143samples of salt iodine salt content is31.99mg/kg，2007，144samples of salt iodine saltcontent is32.26mg/kg，2009，460samples of salt iodine salt content is29.28mg/kg，2012，600samples of iodine salt，salt27.40mg/kg，average with the adjustment ofnational salt iodine concentration change，stable in recent years in30mg/kg.3.After thecomparison，two groups25±5mg/kg group and40±10mg/kg group of urine iodineare>100ug/L either，the25±5mg/kg group (group A)children urinary iodine median is237.67ug/L，n=585; and the40±10mg/kg group (group B) children urinary iodinemedian is249.9ug/L，n=674.Group A and group B with Kruskal-Wallis rank andinspection，the difference was statistically significant (H=6.880，P=6.880).Conclusion1.Salt iodine and urinary iodine positive correlation is significant，and a linear regression relationship between salt iodine and urinary iodine.2.Suzhoucity in2000after universal salt iodization iodine nutrition status were obviouslyimproved，the salt iodine mean stability in30mg/kg，school age group of childrenurinary iodine median always steady at100～300ug/L levels recommended byWHO/UNICEF/ICCIDD，advised to keep running monitoring-feedback-adjustmentmechanism of prevention and cure of idd，added sound index system of prevention andcure of idd，increase the special crowd iodine nutrition monitoring.3.To compare theconsumption of different concentrations of salt iodine content obtained after the medianurinary iodine of children，25±5mg/kg group of children’s urine iodine in iodized salt level is reached on the basis of the standard of eliminating idd，urine iodine mediandown，edible salt iodine concentration higher than the group of urine iodine medianhave significant difference，and urinary iodine median closer to the WHO and otherinternational organizations suggest the most appropriate scope，the new standardGB26878-2011in edible salt iodine content，of iodine in table salt further down to20～30mg/kg compared with the2000old GB5461-2000standard more scientific filliodine，cause a harm to human body caused by iodine excess.