This paper develops a new nonparametric series estimator for the average treatment effect for the case with unconfounded treatment assignment, that is, where selection for treatment is on observables. The new estimator is efficient. In addition we develop an optimal procedure for choosing the...

This paper explores the hospital quality measures based on routine administrative data such as patient discharge records. Most of the measures used in the literature are based on in-hospital mortality risks rather than post-discharge events. The in-hospital outcomes are sensitive to the...

The empirical literature examining aggregate data has generally found small or insignificant effects of exchange rate fluctuations on export volumes. This lack of association between real quantities, such as export volumes and the exchange rate is the so-called “exchange rate disconnect...

We use Japanese aggregate and disaggregate money demand data to show that conflicting inferences can arise. The aggregate data appears to support the contention that there was no stable money demand function. The disaggregate data shows that there was a stable money demand function. Neither was...

The authors examine changes in the wages, employment, and effort of nurses in California hospitals following takeovers by large chains using 1990s data. The market for nurses has been described as a classic monopsony, so that one might expect increases in firm market power to be associated with...

This paper examines the effects of conversions between For-Profit and Not-For-Profit forms on quality of medical care in California hospitals. The sample includes elderly patients treated in California's private hospitals from 1990 to 1998 for Acute Myocardial Infarction and Congestive Heart...

This paper examines the productive efficiency of the hospital sector in Switzerland. A panel data of 214 general hospitals over the four-year period between 1998 and 2001 has been analyzed. A descriptive analysis of the data casts some light on differences across hospital types especially...

This paper applies a number of stochastic cost frontier models to a panel data set and compares their ability to distinguish unobserved heterogeneity from inefficiency variation among firms. The main focus is on Greene's 2005 panel data model that incorporates firm-specific effects in a...

Using a choice experiment conducted among more than a thousand Swiss consumers, we analyze the individual demand for voluntary carbon offsets in different contexts. The analysis is used to identify the consumers’ underlying motives for offsetting emissions, the context effects on their...