The Effects of HMO and Its For-Profit Expansion on the Survival of Specialized Hospital Services
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This study examines the effect of HMO and for-profit HMO share on the survival of safety net services and profitable services in hospitals. Using data from 1990-2003 and proportional hazard models, I find that hospitals in high HMO markets started out having lower hazard of shutting down services in
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美国国家经济研究局创建时间：
2006-07-01
