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神经管畸形(NTD)是一种严重的出生缺陷。我国NTD总发生率呈现出地理聚集性特征。现就影响NTD空间分布的地理因素进行探讨。1.材料与方法(1)资料来源:2001-2004年全国138个出生缺陷监测点NTD发病率资料来自中国出生缺陷监测中心;各出生缺陷监测点海拔出自各监测点政府网站或公众信息网;2003年
Neural tube deformity (NTD) is a serious birth defect. The total incidence of NTD in our country shows the characteristics of geographical aggregation. Geographical factors that affect the spatial distribution of NTD are discussed. 1. Materials and methods (1) Source: The data of incidence of NTD in 138 birth defects monitoring points in China from 2001 to 2004 were obtained from China Birth Defective Monitoring Center. The birth defects monitoring points were at the elevation of the government websites or public information networks of monitoring sites; Year 2003