Estimating compensating and equivalent income variations from hedonic price models

Estimates of welfare changes obtained from hedonic price models usually consist of changes in Marshallian consumer's surplus. This note shows how compensating and equivalent income variations can be computed from the information available in hedonicprice models.     

The Volatility and Transmission of Equity Returns among the G-7 Countries: the post-Bretton Woods experience

This paper models the volatility of national stock market returns of the G-7 countries using ARCH and GARCH modeling techniques. Then, via the use of vector autoregression analysis, the international transmission of volatility among the countries is explored for the period between April 1973 and July 1990. Variance decompositions are calculated in order to quantify the impacts of volatility shocks in one market on the others. Impulse response functions are used to inspect the dynamic responses of domestic and foreign volatility shocks. Results indicate that volatility transmission among the G-7 countries is the norm in the post-Bretton Woods era. Further, we find that volatility shocks are generally absorbed within six to nine months.     

Cost-effectiveness of combination daclatasvir-sofosbuvir for treatment of genotype 3 chronic hepatitis C infection in the United States

Background: A phase III trial evaluated the efficacy and safety of Daklinza (daclatasvir or DCV) in combination with sofosbuvir (SOF) for treatment of genotype (GT) 3 hepatitis C virus (HCV) patients.

Aim: This study evaluated the cost-effectiveness of DCV?+?SOF vs SOF in combination with ribavirin (RBV) over a 20-year time horizon from the perspective of a United States (US) payer.

Methods: A published Markov model was adapted to reflect US demographic characteristics, treatment patterns, costs of drug acquisition, monitoring, disease and adverse event management, and mortality risks. Clinical inputs came from the ALLY-3 and VALENCE trials. The primary outcome was the incremental cost-utility ratio. Life-years, incidence of complications, number of patients achieving sustained virological response (SVR), and the total cost per SVR were secondary outcomes. Costs (2014 USD) and quality-adjusted life years (QALYs) were discounted at 3% per year. Deterministic, probabilistic, and scenario sensitivity analyses were conducted.

Results: DCV?+?SOF was associated with lower costs and better effectiveness than SOF?+?RBV in the base case and in almost all scenarios (i.e. treatment-experienced, non-cirrhotic, time horizons of 5, 10, and 80 years). DCV?+?SOF was less costly, but also slightly less effective than SOF?+?RBV in the cirrhotic and treatment-naïve population scenarios. Results were sensitive to variations in the probability of achieving SVR for both treatment arms. DCV?+?SOF costs less than $50,000 per QALY gained in 79% of all probabilistic iterations compared with SOF?+?RBV.

Conclusion: DCV?+?SOF is a dominant option compared with SOF?+?RBV in the US for the overall GT 3 HCV patient population.     

Feudalism as an economic system

This review essay discusses recent books on feudalism by Perry Anderson, John Critchley, Rodney Hilton, and Witold Kula. Its purpose is to provide an overview to a number of approaches toward the economic aspects of feudalism and to indicate promising directions in this field for comparative economists. To this end, four major questions are discussed: What is feudalism? How and why did the feudal economic system emerge? What are the short-term economic mechanisms within a feudal economy? And how and why did the feudal economic system decline?     

Developing and applying a framework to evaluate participatory research for sustainability

The normative implications of participatory research imply ongoing social learning that ought to lead to personal and institutional transformation. Sustainability science also requires reflexive scientific practice in order to enable the co-generation of solutions that take account of uncertainty and multiple forms of knowledge. However, there is little published peer-reviewed material on how to assess to what degree the rhetoric regarding the benefits of participatory research are achieved in practice, particularly with regard to participatory research for sustainability. This paper outlines how linking the rationales for participatory research and for sustainability science to the principles of evaluation can deliver a conceptually coherent evaluation framework for assessment. The approach for evaluating participatory research in this context consists of framing the evaluation, i.e., setting boundaries on the subject within its social, political, environmental and institutional context and selecting appropriate criteria, methods and data sources. The application of the framework, using a summative evaluation of participatory research for sustainability in north-east Australia, illustrates its strengths and weaknesses, concluding with a consideration of its applicability to further participatory sustainability science.     

Pre‐sale information and hammer prices for Australian Indigenous art

Using sales data from 1987–2011 we investigate the role that pre‐sale price information plays in determining hammer prices for Australian Indigenous artworks. Importantly, we control for the degree of market concentration as this might influence buyers’ perceptions of fairness in relation to price estimates which are provided by auction houses. Auction houses therefore act as important intermediaries between art sellers and art buyers. The results suggest that pre‐sale estimates and market concentration have a differential impact on hammer prices, depending on the point in the conditional realised price distribution under examination.     

Retirements at risk: employees lack a comprehensive, realistic view of resources and needs

Employees who are following conventional retirement-planning advice will be in for a rude awakening as they approach retirement and discover that they can't afford to retire just yet or are likely to outlive their retirement funds. The article discusses how we have arrived at this point, what the implications are, and what both employers and employees can do to remedy the situation.