The CDC reports that 1.13 million Americans have died of COVID-19 through June of 2023. I use a model of the impact over the past three years of vaccines and private and public behavior to mitigate disease transmission during the COVID-19 pandemic in the United States to address two questions....

The US spends more than 4 trillion dollars per year on health care, largely conducted by private providers and reimbursed by insurers. A major concern in this system is overbilling, waste and fraud by providers, who face incentives to misreport on their claims in order to receive higher...

Audits are a common mechanism used by governments to monitor public spending. In this paper, we discuss the effectiveness of auditing with theory and empirics. In our model, the value of audits depends on both the underlying presence of abuse and the government's ability to observe it and...

The Medicare hospice program is intended to provide palliative care to terminal patients, but patients with long stays in hospice are highly profitable, motivating concerns about overuse among the Alzheimer's and Dementia (ADRD) population in the rapidly growing for-profit sector. We provide the...

This study examines the impact of access to confidential administrative data on the rate, direction, and policy relevance of economics research. To study this question, we exploit the progressive geographic expansion of the U.S. Census Bureau's Federal Statistical Research Data Centers (FSRDCs)....

We pose the problem of managing the interstate as an optimal capital stock problem and define user cost as the charge per vehicle mile travelled that rationalizes observed investments in lane miles and pavement quality. We find that user cost is the sum of the opportunity cost of lane miles,...

We introduce a new measure of own-price inflation uncertainty using firm-level data from a large and representative survey of UK businesses. Inflation uncertainty increased significantly from the start of 2021 and reached a peak in the second half of 2022, even as a similar measure of sales...

Screening requirements are common features of fraud and corruption mitigation efforts around the world. Yet imposing these requirements involves trade-offs between higher administrative costs, delayed benefits, and exclusion of genuine beneficiaries on one hand and lower fraud on the other. We...

The Child Tax Credit (CTC) was substantially expanded through the American Rescue Plan Act of 2021, making the benefit more generous, fully refundable, and more periodic. Early studies documented the positive impact of the expanded CTC on reducing poverty and food insufficiency, but there is...