GIS-based method to delimit spheres of influence for a medical consortium: Experience of a pediatric medical consortium, Shanghai.

In this paper, we introduce a geographic method to delimit the spheres of influence of hospitals based on actual health-seeking behaviors of patients by analyzing the spatial distribution of hospitalization probability. Within the boundaries of a sphere of influence, a geographic connection between the leading hospital and the general hospital is established automatically. Based on this geographic connection, leading hospitals should provide technological support to general hospitals located in their sphere of influence, while the general hospitals should provide spare medical resources in return. Thus, the medical consortium can be formed geographically and operate more smoothly.