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卫生部门的结构变迁

Health Sector Structural Change
American Economic Journal: Macroeconomics · 2026 · Nick Pretnar、Maria Feldman

中文摘要

美国卫生服务部门的支出份额和相对价格均在增长。我们使用一个包含垄断竞争和内生人口的两部门一般均衡模型,发现相对价格的上涨几乎完全可归因于部门相对加成的提高。老龄化带来的需求效应在推高价格和支出份额方面仅起次要作用。在控制一般均衡效应和相对加成上升之后,我们估计自20世纪80年代以来,卫生部门的全要素生产率(TFP)以每年高于1%的速度增长,这抑制了相对价格的上涨,同时带来了更高的卫生部门产出,并在一定程度上推高了总体支出份额。

Abstract

The U.S. health-services sector has grown both in terms of its expenditure share and relative price. Using a two-sector general equilibrium model with monopolistic competition and endogenous population, we find that relative price growth is almost entirely attributable to increasing relative sectoral markups. Demand effects from aging play only a minor role driving up prices and expenditure shares. Controlling for GE effects and rising relative markups, we estimate that health-sector TFP has grown since the 1980s at a rate greater than 1% annually, dampening relative price growth, while leading to higher health-sector output, partially driving up aggregate expenditure shares.
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