Modelling multivariate failure times in a competing risks setting is often performed by assuming independence between risks. However, by wrongly assuming independence, seriously biased parameter estimates may result. The aim of this paper is to evaluate a test for independence previously...

A bank that lends money to a household faces two types of risk. Most commonly mentioned is the risk of a default. Hardly ever referred to is the risk of an early redemption of the loan - leading to dormancy. We model consumer loans' transition from an active to a dormant state and estimate a...

The objective of this study is to investigate the sensitivity of the estimated relationship between innovation and firm performance. In doing so, we rely on a knowledge production function approach and carry out comparisons in a number of respects. The sensitivity analysis is based on the...

This paper studies competition in small, concentrated and inter- related markets. Our data set consists of price information fron 543 driving schools in 250 local markets in sweden, which gives a large sample to test hypotheses on how market structure influences competition. The results show...

This paper provides a detailed examination of price responses in the Swedish gasoline market to changes in the world market price. We use daily price data from one of the leading retail chains together with input costs (spot market price and exchange rate)for the period January 1980 to December...

In order to determine to what extent capital investments are sunk costs this study deals with salvage values of discarded metalworking machinery. Even though these assets are expected to be non-specific many of the discarded assets are scrapped rather than sold on second-hand markets....

Many oligopoly theories predict that there will be a positive correlation between market size and the equilibrium number of firms, and some also imply that competition is more intense in larger markets. We test these predictions with a sample of 535 driving schools in 249 markets. With an...

The incidence and duration of work-absence spells for a sample of Swedish blue-collar workers in 1990 and 1991 are analyzed using the Kaplan-Meier non-parametric estimator, discrete-time hazard regression as well as stratified Cox regression. We focus on the effect of economic incentives, i.e.,...

The incidence and duration of work absence spells for a sample of Swedish blue collar workers in 1991 are analyzed using the Kaplan-Meier estimator, discrete time hazard regression as well as stratified Cox regression. The main interest is directed towards the effect of economic incentives. The...

This paper contains two novelties. First, a unified framework for testing and evaluating the adequacy of an estimated autoregressive conditional duration (ACD) model is presented. Second, two new classes of ACD models, the smooth transition ACD model and the time-varying ACD model, are...