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我国部分省市儿童贫血患病率为25％～65％，农村更为严重。这一情况已引起国内外专家学者的重视。为进一步分析营养性贫血的患病特点及影响因素，我们对沈阳市三所中小学7～16岁学生进行了调查，现将结果报道如下。1调查对象与方法1．1调查对象：随机抽取沈阳市皇姑区三所中小?
The prevalence of anemia among children in some provinces and cities in China is 25% -65%, and the rural population is even more serious. This situation has attracted the attention of domestic and foreign experts and scholars. To further analyze the prevalence of nutritional anemia and its influencing factors, we conducted a survey of three primary and secondary school students aged 7 to 16 in Shenyang. The results are reported as follows. A survey of objects and methods 1.1 Survey: random sampling Huanggu District, Shenyang City, three small and medium?