运用空间局部内插研究我国应征男青年高血压的地区分布特征

Study on the Distribution of Hypertension in Recruited Chinese Male Youth through Spatial Local Interpolation Technique

目的研究我国应征男青年高血压检出率的空间分布特征。方法利用第三次全国应征青年体质调查研究资料,在ArcGIS8.1软件支持下,建立我国应征男青年高血压发病的地理信息系统,并以此为基础利用空间局部内插分析方法建立我国应征男青年高血压空间分布图,以交叉评价指标为依据选择无偏最优的空间分布图。结果我国应征男青年高血压空间分布图显示,高血压检出率呈片状分布,检出率较高的北方地区以河北、山东、北京为中心,南方以广西为中心。东北地区舒张压偏高的检出率较其他地区高;以山东为中心的华北地区和以广西为中心的两广地区收缩压、舒张压高的检出率均明显高于其他地区。交叉评价指标显示,建立的我国应征男青年高血压空间分布图是对我国应征男青年高血压分布的最优无偏估计。结论我国应征男青年高血压检出率存在明显的空间分布差异,应进一步研究不同地区的地理环境、气候、经济等对青少年血压的影响。

Objective To explore the spatial distribution of hypertension in recruited Chinese male youth. Methods Maps of spatial distribution on hypertension detection rates in recruited Chinese male youth were produced, using a spatial local interpolation technique with the ArcGIS8.1 software. Cross-validation techniques were used to evaluate the fitness of the distribution maps. Results The spatial distribution of hypertension detection rates in recruited Chinese male youth in 2001 showed that the detectable rate of the hypertension of the recruited male youth was distributed in sections. The sections with a higher rate included Hebei, Shandong and Beijing, as the center of the northern area, and Guangxi, as the center of the southern area. The detectable rate of diastolic pressure was found higher in the areas of northeast and north China than in other places. The prediction error of the cross- validation indicated that the spatial distribution maps of hypertension detecting rates had good fitness to hypertension detecting rates of recruited Chinese male youth. Conclusion There existed in significant spatial difference in hypertension detecting rates of recruited Chinese male youth. Influence of geographical environment, climate, and economy on adolescents＇ blood pressure should be further studied.