TY - JOUR AU - Gaynor,Martin AU - Vogt,William B. TI - Competition Among Hospitals JF - National Bureau of Economic Research Working Paper Series VL - No. 9471 PY - 2003 Y2 - February 2003 UR - http://www.nber.org/papers/w9471 L1 - http://www.nber.org/papers/w9471.pdf N1 - Author contact info: Martin Gaynor Heinz College Carnegie Mellon University 4800 Forbes Avenue,,Room 3008 Pittsburgh, PA 15213-3890 Tel: 412/268-7933 Fax: 412/268-5338 E-Mail: mgaynor@cmu.edu William B. Vogt 513 Brooks Hall Department of Economics Terry College of Business University of Georgia Athens, GA 30602 Tel: 706-542-3970 Fax: 706-542-3376 E-Mail: william.b.vogt@gmail.com AB - Our objective is to determine the effect of ownership type (for-profit, not-for-profit, government) on firm conduct in hospital markets. Secondary objectives include estimating hospital demand systems useful for market definition and merger simulation. To this end, we estimate a structural model of demand and pricing in the short term hospital industry in California, and then use the estimates to simulate the effect of a merger. Demand is modeled at the level of individual consumers using discrete choice techniques and micro data on individuals. Price in the demand equation is endogenous, and we use recently developed instrumental variables techniques to correct for this. We allow the behavior of for-profit and not-for-profit firms to differ, modeling these differences structurally following the relevant theory literature. We find that California hospitals in 1995 faced a downward-sloping demand for their products, with an average price elasticity of demand of -5.67. Not-for-profit hospitals face less elastic demand and have lower marginal costs. Their prices are lower, but markups are higher than those of for-profits. We simulate the effects of the 1997 merger of two hospital chains. In unconcentrated markets such as Los Angeles and San Diego, the merger has virtually no effect on prices. However, in San Luis Obispo County, where the merger creates a near monopoly, prices rise by up to 58%, and the predicted price increase would not be substantially smaller were the chains to be not-for-profit. ER -