Analysis of surveillance results of iodine deficiency disorders in 2014 in Anhui Province / 中华地方病学杂志

ABSTRACT

Objective To explore the iodine nutritional status of people after adjusting iodine content in iodized salt in Anhui Province. Methods In 2014, 30 counties (cities, districts) were selected in Anhui Province according to the probability ratio sampling method (PPS), and one school was selected in each county (city, district), and 50 children aged 8 - 10 years were selected in each school. Urine and household salt samples were collected, urine and salt iodine levels were tested, and thyroid was examined using B-ultrasound. In the township where the school was located, 20 pregnant women's urine samples and household salt samples were collected for urine and salt iodine detection. The salt iodine level was measured by direct titration, Chuan salt and other fortified salt iodine levels were determined by arbitration method (GB/T 13025.7-2012). Urinary iodine was determined by arsenic-cerium catalytic spectrophotometry (WS/T 107-2006). Results A total of 1575 children's household salt samples were collected, the median salt iodine was 23.77 mg/kg, the qualified iodized salt consumption rate was 93.65％(1475/1575); 600 household salt samples were collected from pregnant women, the salt iodine median was 23.50 mg/kg, the consumption rate of qualified iodine salt was 96.33％( 578/600 ) . A total of 1575 urine samples were collected from children, the median urinary iodine was 242.20 μg/L; six hundred urine samples were collected from pregnant women, and the median urinary iodine was 158.15μg/L, 43.33％(13/30) of the counties (cities, districts) pregnant wowen median urinary iodine < 150 μg/L. A total of 1575 thyroid glands were examined in children aged 8 to 10 years, and the thyroid enlargement rate was 3.75％ (59/1575). Conclusion The iodine nutrition of children aged 8 - 10 years in Anhui Province is higher than the appropriate level, but the iodine is not in the excessive state, and the iodine nutrition of pregnant women in some counties (cities, districts) is insufficient.