An analysis of the test results of iodine nutrition in school children aged 8-10 and pregnant women in Jinping County, Guizhou Province / 中华地方病学杂志

ABSTRACT

Objective To understand the situation of iodine nutrition in school children aged 8-10 and pregnant women in Jinping County of Guizhou Province,and to provide a scientific reference for control of iodine deficiency disorders (IDD).Methods Based on Surveillance Scheme of IDD of Guizhou Province (2012),no less than 40 children aged 8-10 and 20 pregnant women were chosen as the research subjects according to the east,west,south,north,and centre 5 directions in Jinping County of Guizhou Province in 2015;a total of 222 children aged 8-10 (half males and half females) and 111 pregnant women were chosen.Arsenic and cerium catalysis spectrophotometry method (WS/T 107-2006) was used to detect urinary iodine content of children and pregnant women;direct titration was used to detect edible salt iodine content from pregnant women.Results The median of urinary iodine of children was 252.0 μg/L in Jinping County in 2015,＜ 100 μg/L accounted for 12.16％ (27/222),100-199 μg/L accounted for 23.42％ (52/222),200-299 μg/L accounted for 27.03％ (60/222),and ≥ 300 μg/L accounted for 37.39％ (83/222);the medians of urinary iodine of children aged 8,9 and 10 were 225.5,252.0 and 286.0 μg/L,respectively;the medians of urinary iodine of male and female children were 237.0 and 255.0 μg/L,respectively;the median of urinary iodine of pregnant women was 198.0 μg/L,＜ 150 μg/L accounted for 35.14％ (39/111),150-249 μg/L accounted for 33.33％ (37/111),and ≥250 μg/L accounted for 31.53％ (35/111);the median of salt iodine from pregnant women was 27.8 mg/kg,21-39 mg/kg accounted for 94.59％ (105/111),the coverage rate of iodized salt was 100.00％ (111/111),the consumption rate of qualified iodized salt was 94.59％ (105/111).Conclusions The median of urinary iodine of children in Jinping County is high,the iodized salt coverage and qualified iodized salt consumption rates are up to the requirements,and the salt iodization standards are still have some space for downward adjustment.