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黄山市儿童碘缺乏病现状调查吴慧丽（黄山市地方病防治所２４５０２１）我们于１９９６年１１月在全市范围内对３０个乡镇中的３０所小学进行了一次儿童碘缺乏病现状调查。现将调查结果报告如下：１对象和方法１．１调查对象应用容量比例概率抽样方法（简称ＰＰＳ法）在全...
Investigation on Status of Iodine Deficiency Disorders in Children in Huangshan Wu Huili (Endemic Disease Prevention and Control Institute, Huangshan City 245021) In November 1996, we conducted a survey on the status of iodine deficiency disorders in children in 30 primary schools in 30 towns across the city. Now the survey results are reported as follows: 1 objects and methods 1.1 surveyed the application of the proportion of probability sampling method (referred to as PPS method) in the whole ...