The paper empirically studies whether pharmaceutical firms uses advertising as a signal for high quality drugs. A nested random effects count data hurdle model is introduced to handle the excess number of zero observations in the sample as well as nested random drug, firm and substance specific...

This paper analyzes how the distribution of gross income among residents in a locality affects the local provision of public goods. The analysis is based on a two-type model, where the local residents can be either high income earners or low income earners. Local provision is assumed to reflect...

This study focuses on earnings immobility and its relation to the originin terms of both the social background and the initial position in the earnings distribution. Twin data is used to reveal the importance for the common background for immobility. A nonparametric technique is used to study if...

This paper examines the effect on earnings of graduating from five different college groups. The study is based on an administrative data set unusually rich in terms of school grades, parental characteristics and other attributes. Contrary to most previous Swedish research, we find no systematic...

In this study, I examine firstly the determinants of the wage earnings for immigrants from different countries, and secondly whether their wage earnings converge to those of comparable native-born Swedes. The study is based on a longitudinal dataset, and the data refers to 1991 and 1995,...

I denna rapport diskuteras vilka faktorer som varit betydelsefulla för ett beslut om att sätta barn till världen under 80- och 90-talet. Födelsetalets kraftiga minskning under 1990-talet diskuteras utifrån 90-tales ekonomiska recession och arbetsmarknadsförändringar samt unga kvinnors och...

We estimate the causal effect on earnings of graduating from old universities rather than new universities/university colleges. The study is based on Swedish administrative data that is comparatively rich in terms of school grades, parental characteristics and other attributes. Despite the more...

The integer-valued moving average model is advanced to model the number of transactions in intra-day data of stocks. The conditional mean and variance properties are discussed and model extensions to include, e.g., explanatory variables are offered. Least squares and generalized method of moment...

Based on data from a panel of the Swedish municipalities during 1993-2004, the effects of public health care expenditure on absence from work due to sickness or disability were studied using an instrumental variable method. Public health care expenditure had no significant effect on absence due...

The Swedish health care system is to a large extent publicly managed by 21 local county councils. During recent years there has been a movement were local county councils have opted to allow more of the production to be performed by alternative producers (i.e. private firms, cooperatives etc.)....