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笔者于1998年4月至1999年7月对山东省部分地区7~13岁儿童身高进行了整群抽样调查,现将结果报道如下。1对象与方法在山东省烟台市两区五镇及淄博市五区三县内随机抽取42所中小学,以7~13岁儿童为对象调查36851人,男18654人,女18197人。?
The author from April 1998 to July 1999 in Shandong Province in some areas of 7 to 13-year-old children height cluster sampling survey, the results reported below. PARTICIPANTS AND METHODS One hundred and twenty-six primary and secondary schools were randomly selected from five districts and five counties in two districts of Yantai, Shandong Province and five districts of Zibo City. A total of 36851 persons, aged 7-13 years, were surveyed, including 18,654 men and 18,197 women. ?