Impact of Physician Practice Closure on Patients' Healthcare access and use
with Elsa Perdrix & Thibaut Heyer
Physician practice closures can disrupt healthcare access and utilization through multiple channels, including changes in prescription behavior by replacement physicians, breaks in continuity of care, increased difficulty in securing a new provider, and longer waiting times for remaining practitioners. This paper provides the first comprehensive analysis of the effects of general practitioner (GP) departure on both directly affected patients and indirectly affected patients who experience spillovers due to increased demand on their physicians. We leverage an exhaustive French administrative health data to implement an event-study and difference-in-differences framework. We find that GP practice closures lead to a persistent decline in visits to general practitioners among affected patients, without a compensating increase in specialist consultations, hospital admissions, or diagnostic imaging. We detect no evidence of spillover effects on other patients of neighboring physicians. Finally, while heterogeneity by physician characteristics is limited, we document larger effects among younger patients with chronic conditions, suggesting a larger vulnerability to disruptions in primary care continuity.
The effects of banning minimum markup laws on pricing in grocery retailing markets
with Jorge Florez-Acosta
We examine the effects of minimum markup laws (MMLs) on downstream pricing, competition, and consumer welfare. Currently, half of the U.S. states have laws imposing minimum markups on merchandise due to concerns over exclusionary practices. Using scanner data on U.S. supermarket sales, we provide new evidence that challenges the exclusionary perspective. Our analysis includes two key components: a causal study of a temporary suspension of a state law in 2007, and a structural analysis of the equilibrium effects of implementing a minimum markup provision. The primary challenge in estimating demand for multiple products lies in the high-dimensional choice set. To address this, we propose a novel solution and show through Monte Carlo simulations its effectiveness in correcting bias. Our estimates indicate that MMLs result in higher average prices.
Empirical bounds on the value of improved health
with James K. Hammitt and Christoph Rheinberger
Policies aimed at improving health and longevity are often evaluated by monetizing their expected gains in quality-adjusted life years (QALYs). The monetization is usually done by dividing an estimate of the value per statistical life (VSL) by the QALYs the average individual is expected to still have ahead of them. We employ data from an online survey taken by a representative sample of French adults to explore the validity of this practice and derive empirical bounds on the willingness-to-pay (WTP) for a marginal improvement in either health quality or longevity. Testing whether the empirical bounds on the WTP for improved health and longevity are the same offers a novel test for the descriptive validity of the QALY model. Our empirical results let us refute this practice routinely applied in health and environmental economics
Certification, manipulation and competition: evidence from Energy Performance Certificates
with Anna Creti, Gabrielle Fack, and Edouard Civel
In this paper, we investigate the relationship between competition and certification quality in the Energy Performance Certificates (EPCs) market, which provides mandatory information on the energy performance of dwellings in European countries. Using French administrative data, we present evidence that the distribution of EPCs exhibits bunching at the cut-off points between energy performance classes, suggesting that some certificates are manipulated to secure a more favorable label. Our empirical analysis shows that the likelihood of manipulation increases when certifiers face heightened competition. This effect can be explained by the fact that certifiers, who are paid by potential sellers, are incentivized to issue more lenient certifications to attract clients. Additionally, we demonstrate that labels indicating higher energy efficiency are associated with significant house price premiums. As a result, manipulation has distributional effects, increasing sellers' gains at buyers' expense.
The impact of hospitals mergers on the service provision and quality
with Joanna Piechucka and Gaetan Menard
The effect of phasing-out energy inefficient dwellings from the rental market in France
with Anna Creti, Gabrielle Fack and Edouard Civel
What is the impact of publicly financing private competitors on the hospital market? Evidence from Denmark
with Benoît Carré and Søren Rud Kristensen
The competitive effects of consumer-based platforms on Eye-Glass stores.
Valuing non-marginal changes in mortality and morbidity risk.
with James K. Hammitt and Christoph Rheinberger
Journal of Health Economics, 2022.
Multiproduct retailing and consumer shopping behavior: The role of shopping costs.
with Jorge Florez-Acosta
International Journal of Industrial Organization, 2020.
Competition Between Public and Private Maternity Care Providers in France: Evidence on Market Segmentation.
with Lise Rochaix
International Journal of Environmental Research and Public Health, 2020.
Does the Value per Statistical Life Vary with Age or Baseline Health? Evidence from a compensating wage study in France.
with Lise Rochaix
Journal of Environmental Economics and Management, 2020.
Theoretical bounds on the value of a QALY
with James K. Hammitt and Christoph Rheinberger
Journal of Health Economics, 2020.
Placing a monetary value on the human health component of zoonotic diseases - A methodological note with an application to cysticercosis in Africa.
with Orsi Mikecz and Ugo PicaCiamarra
Preventive Veterinary Medicine, 2020.
Peeling back the onion: Using latent class analysis to uncover heterogeneous responses to stated preference surveys
with James K. Hammitt and Christoph Rheinberger
Journal of Environmental Economics and Management, 2018.
Willingness to pay as a novel approach to assessing the impact of dyslexia in adults
with Bennett A. Shaywitz, John M. Holahan, Karen Marchione & Reissa Michaels, Sally E. Shaywitz and James K. Hammitt
Journal of Benefit Cost Analysis, 2017.
The value of disease prevention vs. treatment
with James K. Hammitt and Christoph Rheinberger
Journal of Health Economics, 2016.
Folic acid advisory: a public health challenge?
Health Economics, 2016.