Application of GIS-Based Spatial Filtering Method for Neural Tube Defects Disease Mapping  

作　　者：CHI Wenxue WANG Jinfeng LI Xinhu ZHENG Xiaoying LIAO Yilan 

机构地区：[1]School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China [2]Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China [3]Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361003, Fujian, China [4]Institute of Population Research, Peking University, Beijing 100871, China

出　　处：《Wuhan University Journal of Natural Sciences》2007年第6期1125-1130,共6页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Basic Reserch Program of China (973 Program) (2001CB5103);the National Natural Science Foundation of China (40471111 and 70571076).

摘　　要：This study is to assess the prevalence rates spatial pattern of neural tube defects with geographic information system and spatial filtering technique. A total of 80 infants who diagnosed from neural tube defects in the area being studied between 1998 and 2001 were analyzed. Firstly, the geographic information system （GIS） software ArcGIS was used to map the crude prevalence rates. Secondly, the data were smoothed by the method of spatial filtering. We evaluated that the effect of changes in spatial filtering radius size was assessed by creating maps based on various filtering radius sizes. The 3 miles or larger filtering radius gives better section variability than the 2 and 2.5 miles or smaller ones. The maps produced by the spatial filtering technique indicate that prevalence rates in the villages in the southeastern region are to produce higher prevalence than that in the other regions. The smoothed maps based on Heshun County display a more adequate data representation than the raw prevalence rate map.This study is to assess the prevalence rates spatial pattern of neural tube defects with geographic information system and spatial filtering technique. A total of 80 infants who diagnosed from neural tube defects in the area being studied between 1998 and 2001 were analyzed. Firstly, the geographic information system （GIS） software ArcGIS was used to map the crude prevalence rates. Secondly, the data were smoothed by the method of spatial filtering. We evaluated that the effect of changes in spatial filtering radius size was assessed by creating maps based on various filtering radius sizes. The 3 miles or larger filtering radius gives better section variability than the 2 and 2.5 miles or smaller ones. The maps produced by the spatial filtering technique indicate that prevalence rates in the villages in the southeastern region are to produce higher prevalence than that in the other regions. The smoothed maps based on Heshun County display a more adequate data representation than the raw prevalence rate map.

关 键 词：birth defects neural tube defects neural tube defects （NTDs） geographic information system （GIS） spatial filtering China 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]