作者：NORTON, EC; STAIGER, DO
作者单位：Harvard University
摘要：This article addresses the effect of hospital ownership on the delivery of service to uninsured patients. It compares the volume of uninsured patients treated in for-profit and nonprofit hospitals by regarding hospital ownership and service as endogenous. Instrumental variable estimates are used to predict the percentage of patients who are uninsured, controlling for hospital ownership and service. The study shows that when for-profit and nonprofit hospitals are located in the same area, they ...
作者：BURTON, PS
摘要：This article explores how the introduction of new products by multiproduct firms might be affected by existing goods in each firm's portfolio. A logit analysis is conducted to estimate the effects of local monopoly power, cost advantages, and learning. Characteristics theory is used to determine whether the addition of a new product to a firm's existing portfolio creates the potential for local monopoly power. While the chemical similarity of products has the largest effect, results nonetheles...
