点模式与距离成本下长沙某医院服务范围分析

Service Range Analysis of a Hospital in Changsha Based on Dot Pattern and Distance Cost

通过核密度法、标准差椭圆算法、中心点分析法、距离分位数法等空间分析方法可多角度全面地分析医院与其就诊患者之间的关系,得到医院的空间格局和服务范围分布特征。通过对长沙市某医院3个月就诊患者病例记录的处理与统计分析,明确了该医院的服务分布模型。由于"距离—衰减"规律和时间成本等的影响,该医院中心区域病例点密度最高,越向外扩散病例点分布越稀疏,最外层的区域仅有零星分布,实质服务半径在7.5 km以内;且以该医院为中心,患者呈西北—东南方向分布,向东南扩散。

Through the nuclear density method, the standard deviational ellipse method, the center point analysis method and the distance quantile analysis method can analysis the relationship between the hospital and the patients roundly and obtain the spatial pattern and service distribution of the hospital. Through the statistical analysis of patients' medical records in three month of a hospital in Changsha, we obtained service distribution model of the hospital preliminary.Due to the influence of the 'distance-decay' law and time cost, the more outward,the less patient points distribution. There are only sporadic patient point in the outermost district. The substantive service radius of the hospital is within 7.5 km.And taking the hospital as the center, the patient distribution presents northwestsoutheast direction and diffusion to the southeast.