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Mercedes Vellez

Mercedes Vellez
World Bank · Independent Evaluation Group (IEG) (Operations Evaluation Department)

PhD in Economics

About

9
Publications
10,518
Reads
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96
Citations
Additional affiliations
January 2012 - July 2015
Center for the Study of State and Society
Position
  • External Researcher

Publications

Publications (9)
Conference Paper
Full-text available
Honduras has recently contracted-out the provision of primary health care services to decentralized providers in order to expand health care coverage in rural areas. This paper evaluates the impact of contracting-out on health outputs and outcomes related to access, quality, and equity in health care. The impact evaluation design is quasi-experimen...
Article
Honduras has recently contracted-out the provision of primary health care services to decentralized providers in order to expand health care coverage in rural areas. This paper evaluates the impact of contracting-out on health outputs and outcomes related to access, quality, and equity in health care. The impact evaluation design is quasi-experimen...
Chapter
Full-text available
PPPs have been implemented broadly around the world in the infrastructure sector-­‐water and sanitation, transports, energy, and telecommunications-­‐ and, more recently, in the provision of public services-­‐education, health, prisons, and water and waste management. Key aspects of the contract design, such as risk allocation and payment mechanism...
Article
Medical device expenditures are an important driver of the growth in health care spending and hospitals pay significantly different prices for the same medical device. This paper uses hospitals’ acquisition data to explore the determinants of price discrimination in the acquisition of medical devices across Italian hospitals considering demand fact...
Article
This paper contributes to the empirical literature on auctions and negotiations. Using healthcare facilities data on procurement contracts, I find evidence that auctions do not yield lower prices than negotiations. This result is robust to specifications tackling quality differences, endogenous participation, and the bilateral and multilateral natu...

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