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婴儿死亡率是反映某一地区经济、文化、卫生水平的综合性评价指标。我们于1991年6月至8月对鄞县1990年婴儿出生、死亡漏报情况进行回顾调查。结果如下:内容和方法调查对象为有鄞县正式户口的育龄妇女及1989、1990年出生的婴儿。1990年1月1日零时至同年12月31日24时内的出生、死亡婴儿。在全县各乡(镇)采用整群随机抽样方法,调查占该乡(镇)五分之一人口
Infant mortality rate is a comprehensive evaluation index that reflects the economic, cultural and health level of a certain area. We conducted a retrospective survey of infant births and fatality in 1990 in Yin County from June to August 1991. The results are as follows: Content and Methods The survey respondents were women of childbearing age with Yinxian official account and babies born in 1989 and 1990. Births and deaths of babies at 0:00 am on January 1, 1990 to 24:00 on December 31 of the same year. In each township (town) of the county, cluster random sampling method was used to survey one fifth of the township (town) population