Health Economics Commons^™

Multivariate Fractional Regression Estimation Of Econometric Share Models, John Mullahy

John Mullahy

This paper describes and applies econometric strategies for estimating regression models of economic share data outcomes where the shares may take boundary values (zero and one) with nontrivial probability. The main focus of the paper is on the conditional mean structures of such data. The paper proposes an extension of the fractional regression methodology proposed by Papke and Wooldridge, 1996, 2008, in univariate cross-sectional and panel contexts. The paper discusses the stochastic aspects of share definition and measurement, and summarizes important features of the existing literature on econometric strategies for share model estimation. The paper then goes on to discuss …

Concurrent Sexual Partnerships Do Not Explain The Hiv Epidemics In Africa: A Systematic Review Of The Evidence, Larry Sawers, Eileen Stillwaggon

Economics Faculty Publications

The notion that concurrent sexual partnerships are especially common in sub-Saharan Africa and explain the region’s high HIV prevalence is accepted by many as conventional wisdom. In this paper, we evaluate the quantitative and qualitative evidence offered by the principal proponents of the concurrency hypothesis and analyze the mathematical model they use to establish the plausibility of the hypothesis.

We find that research seeking to establish a statistical correlation between concurrency and HIV prevalence either finds no correlation or has important limitations. Furthermore, in order to simulate rapid spread of HIV, mathematical models require unrealistic assumptions about frequency of sexual …

Mother Earth "Speaks": Change Yourself, Change The World, Use The Archetypal Energy "Harmony" As A Guide, Carroy U. Ferguson

Carroy U "Cuf" Ferguson, Ph.D.

In relation to the Cosmos, we all, as human beings, live on this tiny planet we call Earth, a planet that supports and sustains life, as we know it. There are many different kinds of people, plants, and animals functioning in harmony with soil, air, and water--all linked to one another in a complex web of life to form one Earth community. Unfortunately, we often take this miracle and ecosystem of life for granted. When, however, we take the ecosystem of life too much for granted, Mother Earth "speaks," reflecting imbalances and dis-harmonies. When Mother Earth "speaks," her message is …

Contingent Valuation Studies And Health Policy, Matthew D. Adler

All Faculty Scholarship

This short comment argues that both cost-benefit analysis (CBA) and cost-effectiveness analysis (CEA) should be seen as imperfect tools for evaluating health policy. This is true, not only for extra-welfarists, but even for welfarists, since both CBA and CEA can deviate from the use of social welfare functions (SWF). A simple model is provided to illustrate the divergence between CBA, CEA, and the SWF approach. With this insight in mind, the comment considers the appropriate role of contingent-valuation studies. For full text, please see: http://www.law.upenn.edu/cf/faculty/madler/workingpapers/578A59B6d01.pdf.

Tontines For The Invincibles: Enticing Low Risks Into The Health-Insurance Pool With An Idea From Insurance History And Behavioral Economics, Tom Baker, Peter Siegelman

All Faculty Scholarship

Over one third of the uninsured adults in the U.S. below retirement age are between 19 and 29 years old. Young adults, especially men, often go without insurance, even when buying it is mandatory and sometimes even when it is a low cost employment benefit. This paper proposes a new form of health insurance targeted at this group—the “Young Invincibles”—those who (wrongly) believe that they don’t need health insurance because they won’t get sick. Our proposal offers a cash bonus to those who turn out to be right in their belief that they did not really need health insurance. The …

Fragmentation In Mental Health Benefits And Services: A Preliminary Examination Into Consumption And Outcomes, Barak D. Richman, Daniel Grossman, Frank Sloan

Faculty Scholarship

In this chapter, we examine consumption patterns and health outcomes within a health insurance system in which mental health benefits are administered under a carved-out insurance plan. Using a comprehensive dataset of health claims, including insurance claims for both mental and physical health services, we examine both heterogeneity of consumption and variation in outcomes. Consumption variation addresses the regularly overlooked question of how equal insurance and access does not translate into equitable consumption. Outcomes variation yields insights into the potential harms of disparate consumption and of uncoordinated care. We find that even when insurance and access are held constant, consumption …

Oil And Water: Mixing Individual Mandates, Fragmented Markets, And Health Reform, Allison K. Hoffman

All Faculty Scholarship

With momentum toward national health reform, there is wide support for legislation to include an individual mandate that would require all Americans to carry health insurance. Discussion of the individual mandate has relied largely on whether the mandate will generate universal coverage as a gauge for success. This article challenges the notion that an individual mandate is successful if it leads to universal coverage, revealing a critical problem the individual mandate will face even if all Americans were to have health insurance. To uncover this problem, this article sets out a novel framework that disentangles the three different policy objectives …

Workers On The Margin: Who Drops Health Coverage When Prices Rise?, Edward Okeke, Richard Hirth, Kyle Grazier

Edward Okeke

We revisit the question of price elasticity of employer-sponsored insurance (ESI) take-up by directly examining changes in the take-up of ESI at a large firm in response to exogenous changes in employee premium contributions. We find that, on average, a 10% increase in the employee’s out-of-pocket premium increases the probability of dropping coverage by approximately 1%. More importantly, we find heterogeneous impacts: married workers are much more price-sensitive than single employees, and lower-paid workers are disproportionately more likely to drop coverage than higher-paid workers. Elasticity estimates for employees below the 25th percentile of salary distribution in our sample are nearly …