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营养性贫血是儿童青少年的常见病和多发病．为了解本地区青少年贫血现状和血红蛋白平均水平。我们于1991年9月29日至11月10日对榆次市、太谷县、介休县部分学校学生进行了Hb、PVC、MCHC三项指标的调查。1对象和方法：1．1对象：选择晋中地区有代表性学校5所，按随机抽样原则，
Nutritional anemia is a common and frequently occurring disease in children and adolescents. To understand the current status of anemia in adolescents in the region and the average hemoglobin level. From September 29 to November 10, 1991, we conducted a survey of three indicators of Hb, PVC and MCHC for some school students in Yuci City, Taigu County and Jiexiu County. 1 Subjects and methods: 1.1 Object: Select 5 representative schools in Jinzhong area, according to the principle of random sampling,