为了解我市小学生甲状腺肿大率及尿碘水平 ,结合 1998年宁夏回族自治区碘缺乏病防治自查工作 ,我们于 1998年 6～7月停止其他补碘剂的情况下 ,对儿童甲状腺肿大率及尿碘水平进行了抽样检测。1　对象与方法1.1　对象 :按照容量比例概率抽样法 (ＰＰＳ)方法 ,抽查 33所小学学生 1 In order to understand the city’s primary school goiter rate and urinary iodine levels, combined with self-examination of iodine deficiency disorders in Ningxia Hui Autonomous Region in 1998, we stopped in June to July 1998 other cases of iodine supplement, the children goiter Rate and urinary iodine levels were sampled. 1 Subjects and Methods 1.1 Subjects: According to the volume proportional probability sampling (PPS) method, a sample of 33 primary school students 1