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我省于1998年8月1日～10月31日,在抽样点监测活产儿2426例,其中低出生体重儿117例,低出生体重儿发生率为4.82％。现将我省监测点的低出生体重儿的社会环境因素分析如下。1 资料与方法1·1 抽样方法 以《中国卫生状况分类》为基础,按随机两阶段整群抽样方法,抽取我省大城市(武汉市)、中等城市(襄樊市)、二类县(红安县)、三类县(房县)共4个抽样点。各抽样点按地理位置、经济状况分层抽取监测单元,大、中城市抽取2～3个具备接产条件的医院为监测单元,农村抽取2～3个为监测单元。
From August 1 to October 31, 1998, the province monitored 2,426 live births at sampling points, including 117 with low birth weight and 4.82% with low birth weight. Now the province’s monitoring point of low birth weight children’s social and environmental factors are as follows. 1 Materials and Methods 1.1 Sampling Methods Based on the “Classification of Health Status in China”, a randomized two-stage cluster sampling method was adopted to collect data from major cities (Wuhan City), medium-sized cities (Xiangfan City) An County), three counties (Fang County) a total of four sampling points. The sampling points are geographically separated and the monitoring units are drawn by stratification in economic conditions. 2 to 3 hospitals with large-scale and medium-sized cities are selected as monitoring units and 2 to 3 in rural areas as monitoring units.