Identification of Supplier Induced Demand in the Health Care Sector
探讨了实证检验医生或医院等供应水平是否诱导医疗需求增加时遇到的问题，并指出传统方法可能不适用于横截面汇总数据。
This paper explores the issues and pitfalls encountered when attempting to test empirically the hypothesis that physician, hospital, or any other input supply level induces increasing demand for health services in the strict sense of demand shift and, through that, increased demand for the input in question. Evidence is presented which suggests that an empirical test of the supplier induced demand (SID) hypothesis of the type traditionally performed may not in fact be feasible with cross-sectional aggregate data such as is usually used.