Abstract
In this study, we propose a cooperation strategy planning method whose purpose is a promotion of a regional and occupational health cooperation service. “Chita Peninsula secondary medical service area” in Aichi was analyzed as a case study. In the analysis, a cooperation of some institutions was quantitatively described by using index of relationships and resources. A result of the analysis clarified characteristics of each institution which participate in cooperation service. This method discloses the institution which can't perform their strengths effectively and gives institutions better choices of relationships and resources.