Cross-sectional investigation of iodine deficiency disorders in Caidamu Basin in 2006,Qinghai Province / 中国地方病学杂志

ABSTRACT

Objective To understand and to assess the current situation of iodine deficiency disorders in Qaidam Basin,and to provide the information for measures and strategies of prevention and cure of this disease.Methods Within the boarder of Qaidam,five counties(cities)were selected for the investigation,which were Delingha,Golmud,Dulah,Wulan,and Tianjun.Two townships(towns)have been selected in each county(city),51 students aged 8 to 10 in one of the primary schools in each township(town)underwent thyroid palpation examination,their urine samples were collected to test urine iodine using arsenic-Ce catalysis spectrophotometric method.Thirty students of fifth-grade class in the selected schools underwent the questionnaire of prevention knowledge of iodine deficiency disease,while 10 housewives in each village near by the school were asked for the same questions,and the edible salt in their home was quantified of iodine by using direct titration method.Results Among the children aged 8 to 10,the average prevalence rate of thyroid enlargement Was 5.9%(30/510),higher than that stipulated by the national standard.The median of urinary iodine of urinary iodine level for children aged 8 to 10 was 83.4μg/L,the ration of urinary iodine＜20μg/L Was more than 10 percent;qualified iodized salt consumption rate of residents was 59.0%(118/200);the average scores and the checkout rate of fifth-grade students and the housewives who had underwent the questionnaire survey were 31.5,12.0%(36/300)and 35.9,18.5%(37/200)respectively.Conclusions The prevention and cure of iodine deficiency disorders in selected area do not work well,iodized salt is not popular,therefore health education needs to be strengthened.