Report of the seventh time monitoring results of patients with iodine deficiency disorders in Fujian Province

Abstract

Objective To understand the iodine nutritional status of population and the progress of eliminating iodine deficiency disorders after the adjustment of iodine content of edible salt in Fujian Province. Methods Thirty counties were sampled by population proportion probability sampling in the whole province. The iodine level in edible salt from 1 507 households was tested by direct titration method (GB/T 13025.7-1999); goiter rate and prevalence of thyroid nodules of 1 642 children aged 8 - 10 were examined by type-B ultrasound; urinary iodine level of 1 619 children and 623 pregnant women was determined by arsenic cerium catalytic spectrophotometric method (WS/T 107-2006). Results The median of iodine level in edible salt from those 1 507 households was 24.3 mg/kg, the consumption rate of qualified iodized salt was 92.0% (1 387/1 507); the goiter rate of those 1 642 children aged 8 - 10 was 3.1% (51/1 642), their prevalence of thyroid nodules was 14.4% (236/1 642), and the median urinary iodine level was 154.3 μg/L, among them, urinary iodine 0.05, those children aged 8 - 10 were divided into several groups base on the median urinary iodine level ( 0.05]. Conclusions All indicators have met the national standard of eliminating iodine deficiency disorders after the adjustment of iodine content of edible salt in Fujian Province. Iodine content of edible salt has been adjusted in place, in the general population, iodine nutritional level is in suitable condition. There exists no problem of iodine excess, but there is an iodine deficiency problem in pregnant women, among those children aged 8 - 10, the prevalence of thyroid nodules has nothing to do with the iodine nutritional level. Key words: Salts; Deficiency diseases, iodine; Urine; Thyroid nodule