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为了贯彻《全国学生贫血综合防治方案（试行）》精神，我站于1994年元月随机抽取市内中小学各3所，对中小学生进行血红蛋白（Hb）测定。从贫血者中随机抽取200名进行配对调查。1对象与方法1.1对象：随机抽取6所学校（东、中、西3片各2所），对7－14岁男女学生各800名（各个年龄
In order to carry out the spirit of “National Student Anemia Prevention and Control Program (Trial)”, I randomly selected 3 primary and secondary schools in the city in January 1994 to measure hemoglobin (Hb) among primary and secondary school students. A total of 200 anemia were randomly selected for paired investigation. 1 Subjects and Methods 1.1 Subjects: Six schools (2 in each of East, Middle and West) were randomly selected, and 800 for boys and girls 7-14 years old (all ages