出生缺陷地区聚集性的相应分析

CORRESPONDENCE ANALYSIS IN A STUDY OF SPATIAL CLUSTERING OF BIRTH DEFECTS

相应分析是因子分析的扩展，主要用于分析二维数据阵的行因素与列因素之关系。本文介绍了相应分析的基本思想，并对１９９０年全国七种主要出生缺陷的地区聚集性进行了分析。相应分析的结果将我国分为南方和北方，指出出生缺陷在我国存在着地区性差异，南方以ＣＬＰ为主，北方以ＮＴＤ为主。而这里南方与北方的分割恰与北纬３５°很接近。

Correspondence analysis, the extension of factor analysis, is mainly employed in analyzing the relationship between row and column variables for 2-dimension data. This paper introduces the principles of the procedure and its application in the study of spatial clustering of birth defects. The results show that the CLP is conspicuously in the South of China, and NTD in the North. The line diveded China into South and North is close to 35degree north latitude precisely.