Which Markets (Don't) Drive Pharmaceutical Innovation? Evidence From U.S. Medicaid Expansions

Pharmaceutical innovation policy involves managing a tradeoff between high prices for new products in the short-term and stronger incentives to develop products for the future. Prior research has documented a causal relationship between market size and pharmaceutical research and development (R&D)

药品创新政策需在短期新产品的高定价与为未来研发药物提供更强激励之间进行权衡取舍。既往研究已证实市场规模与医药研发（R&D）之间存在因果关系。