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广州市于１９９６年起在全市范围内供应加碘食盐防治碘缺乏病，１９９９年我市按卫生部“实现消除碘缺乏病阶段目标评估方案”对所辖１２个区、县级市实现消除碘缺乏病阶段目标进行了评估，现将现场调查数据分析如下。１方法１．１调查学校的抽样 以区、县级市为单位进行。先将
Guangzhou City in 1996 from the supply of iodized salt within the city to prevent iodine deficiency disorders, in 1999 the city according to the Ministry of Health “to eliminate iodine deficiency disorders stage target assessment program” under the jurisdiction of 12 districts and counties to eliminate iodine Lack of disease stage objectives were assessed, the field survey data are analyzed as follows. 1 Method 1.1 Survey School sampling district and county-level cities as a unit. First