This paper uses annual data from 1980-1998 to test two models of the relationship between wholesale and retail marijuana prices. Results from regressions of retail prices on wholesale prices reject a multiplicative model, in which the difference in prices between levels is proportional to the wholesale price, in favor of an additive model, in which the price difference is a fixed amount. This f...

We examine whether the Colombian government’s expansion of publicly provided health insurance in the early nineties created incentives for people to become informal. Using variation in the onset of the Census of the Poor across municipalities and over time, we find robust and consistent estimates of an increase in informal employment between 2 and 5 percentage points after the expansion. As rob...

Using both household and linked employer-employee data for Germany, we assess the effects of non-union representation in the form of works councils on (1) individual sickness absence rates and (2) a subjective measure of personnel problems due to sickness absence as perceived by a firm's management. We find that the existence of a works council is positively correlated with the incidence and th...

nresp severa^ most instructive cases having bringin6 fi^le,nSe^Ves' the opportunity of tht> v ? n your notice. On referring to tW f ̂i18 aut^orities on aural surgery I find and T* u ?^er books, such as Kramen, Wilde rVn 110 mention of this complaint is , but Mittendorf says that " these fungus growths are probably of more frequent occurrence than is at present supposed; they are apt to be overlo...

We analyze the eff ect of job insecurity on psychological health. We extend the group of people being aff ected to employees who have insecure jobs to account for a broader measure of the mental health consequences of potential unemployment. Using panel data with staff reductions in the company as an exogenous source of job insecurity, we fi nd that an increase in fear of unemployment substanti...

This paper shows that government anti-smoking campaign can benefit the government in the political bargaining with the tobacco industry by reducing the latter's alternative welfare. Although the equilibrium regulation on the tobacco industry increases as a result of government anti-smoking campaign, the political contribution from the tobacco industry will not necessarily go down. Anti-smoking ...

This paper examines the eff ects of hospital case volume on quality of care on the example of intact abdominal aortic aneurysm (AAA) and hip fracture (HIP). We conduct the analysis on patient level with multiple logistic regression analysis. Quality is measured with a binary variable which indicates whether the patient has died in hospital. The results show that patients who are treated in hosp...

The effect of competition on the quality of health care remains a contested issue. Most empirical estimates rely on inference from non-experimental data. In contrast, this paper exploits a procompetitive policy reform to provide estimates of the impact of competition on hospital outcomes. The English government introduced a policy in 2006 to promote competition between hospitals. Using this pol...

This paper offers projections of future transmission dynamics for SARS-CoV-2 in an SEIRS model with demographics and waning immunity. In a stylized optimal control setting calibrated to the United States, we show that disease is endemic steady state its are characterized by damped oscillations. The magnitude oscillations depends on how fast immunity wanes. social distancing policy both curbs pe...

We present a new estimator for causal effects with panel data that builds on insights behind the widely used difference-in-differences and synthetic control methods. Relative to these methods we find, both theoretically empirically, this “synthetic difference-in-differences” has desirable robustness properties, it performs well in settings where conventional estimators are commonly practice. st...