摘要
目的绘制中国1990年代死因回顾1/10人口抽样调查肿瘤分布地图,展示中国1990年代肿瘤的地理分布和区域性集中趋势。方法利用1990年代的全国死因抽样调查数据,根据中国1964年人口年龄分布计算标准化死亡率,以中国1990年代数字地图为背景,在Arcview软件支持下,利用反距离权重内插法(IDW)预测非采样地区的死亡率数值,绘制肿瘤死亡分布地图。结果现已完成全国1990年代肿瘤分布地图绘制,与填充法相比,IDW所绘地图死亡率分布边续且过渡平滑,显示出肿瘤地区分布特点。结论利用IDW根据抽样区域数据预测其他区域数据,可以实现用抽样数据绘制全国肿瘤分布地图,结果仍可以较为准确地反映出肿瘤分布规律。
Objective To draw a chorochromatic atlas of mortality on China Cancer Database in order to display the geographical distribution of selected diseases in China and to identify its demographic and disease-specific patterns in the 1990＇s. Methods The source of data was from nationwide cause-ofdeath surveys conducted in the 1990＇s. Standardized rates were computed by direct method using the population age distribution in 1964 as the standard of weights, lnverse distance weight（IDW） was applied as the method of interpolation with the help of Arcview system to draw a choropleth map of cancer mortality. Results The IDW maps of camcer mortality shows a contious and smooth variation, especially compared with maps drawn by filling method. Conclusion With the application of inverse distance weight interpolation, it seemed feasible to draw continuous map of cancer on sampling data.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
2006年第3期230-233,共4页
Chinese Journal of Epidemiology
基金
科技部专项课题基金资助项目(2000DEB30104)
关键词
肿瘤
地理信息系统
反距离权重内插法
Carcinoma
Geographic information system
Inverse distance weight
