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为了全面掌握我市近年来实施碘缺乏病防治措施的实际效果，于1998年10月按照国家《碘缺乏病消除标准》（GB－16006－1995），采用总人口比例容量概率法（PPS），在全市范围内抽取了30所小学（点）和1200名8－10岁小学生进行了调查，现报道如下。1材料与方法1．1对象每所抽查小
In order to comprehensively grasp the actual effect of implementing prevention and treatment measures for iodine deficiency disorders in our city in recent years, in October 1998, according to the national “Standard for Disinfection of Iodine Deficiency Disorders” (GB-16006-1995), the total population proportionality capacity (PPS) A survey of 30 primary schools (points) and 1,200 pupils aged 8-10 was conducted within the city and is reported below. 1 Materials and Methods 1.1 Each object checks small