Multimarket Contact in the Hospital Industry
研究美国医院系统在多市场接触增加时，竞争减弱导致价格上升，对反垄断政策有参考价值。
Hospitals in the United States increasingly belong to multihospital systems that operate in numerous geographic markets. A large literature in management and economics suggests that competition between firms may be softened as a result of multimarket contact—i.e., firms competing with one another in multiple markets simultaneously. Exploiting plausibly exogenous variation in multimarket contact generated by out-of-market consolidation, I find that increases in multimarket contact over the 2000–2010 period led to higher hospital prices. These results suggest that continued hospital consolidation may produce higher prices even if that consolidation only minimally affects within-market concentration.