ABSTRACT
Objective:To understand the iodine content of edible salt in residents of Xinjiang Production and Construction Corps (referred to as Corps), and provide scientific evidence for prevention and treatment of iodine deficiency disorders.Methods:According to the requirements of the "National Iodine Deficiency Disorders Surveillance Program" form 2015 to 2019, in accordance with the principle of random sampling, one regiment from each of the five directions of east, west, south, north and center in the Corps was selected, and four companies were selected from each regiment. Edible salt samples from the homes of 15 residents in each company were collected, and salt iodine content was quantitatively tested and the test results were analyzed.Results:From 2015 to 2019, 21 028 household salt samples were collected, qualified iodized salt were 20 204, non-qualified iodized salt were 712, non-iodized salt were 112, iodized salt coverage rate was 99.47% (20 916/21 028), iodized salt qualified rate was 96.60% (20 204/20 916), qualified iodized salt consumption rate was 96.08% (20 204/21 028). The average salt iodine content was (27.72 ± 4.81) mg/kg. From 2015 to 2019, the iodized salt coverage rates in the whole Corps were all > 95%, and the iodized salt qualified rates and the qualified iodized salt consumption rate were all > 90%. Among the 14 divisions of the Corps, iodized salt coverage rates were all > 95%, except for the 12th and 14th divisions, where the iodized salt qualified rates and qualified iodized salt consumption rates were < 90%, all other divisions were > 90%.Conclusions:Iodized salt coverage rate, iodized salt qualified rate and qualified iodized salt consumption rate have all reached the national standard for eliminating iodine deficiency disorders from 2015 to 2019, however, non-iodized salt exists in some areas, and the qualified iodized salt consumption rate is low. We should strengthen monitoring of iodized salt in key areas and promote health education, consolidate and maintain achievements in eliminating iodine deficiency disorders.
ABSTRACT
Objective To analyze the impact of reduction of iodine content in iodine salt on iodine nutrition level among children and pregnant women in Xinjiang Production and Construction Corps (hereinafter referred to as the Corps).Methods In 2011 (before adjusting),the population proportional probability sampling (PPS) method was used to select 30 round fields in the Corps,one primary school was selected in each round field,and 40 children aged 8-10 years old (half males and half females) were taken from each primary school,to collect salt samples from their homes,salt iodine level was determined and thyroid examination was performed;among those 40 children,12 children (half males and half females) were selected,and urine samples were collected to test urine iodine level;at the same time,10 pregnant women were selected from the school location,and their urine samples were collected to test urine iodine level.In 2015 (after adjusting),in 14 divisions of the Corps,one round field was selected in each division from each of five directions of east,west,south,north and middle.Four company teams were selected in each round field,and 15 salt samples of households were collected in each company team,salt iodine was detected.One team primary school was selected in each round field,40 children aged 8-10 years old (half males and half females) were taken from each primary school,urine samples were collected to detect urine iodine level,and thyroid examination was performed;20 pregnant women were taken from each round field,and urine samples were collected to detect urine iodine level.A comparative analysis of iodine nutritional status in children and pregnant women in 2011 and 2015 was conducted.Goiter was examined by B-ultrasonography;salt iodine was detected by direct titration;urine iodine was detected by arsenic cerium catalytic spectrophotometry (WS/T 107-2006).Results A total of 1 195 and 4 215 salt samples were collected in 2011 and 2015,the medians of salt iodine were 32.3 and 28.2 mg/kg,respectively;the goiter rates of children were 3.4％ (42/1 220) and 1.0％ (26/2 552),respectively,both were below national standards (5.0％);the medians of urine iodine of children were 235.3 and 217.9 μg/L,respectively,both were more than the appropriate level;the medians of urine iodine of pregnant women were 183.0 and 157.7 μg/L,respectively,both were at appropriate level.Conclusion The reduction of salt iodization has no significant effect on iodine nutritional status in children and pregnant women,the iodine nutrition levels of children and pregnant women are good.