We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as...

With prospective payment of hospitals becoming more common, measuring their performance is gaining in importance. However, the standard cost frontier model yields biased efficiency scores because it ignores technological heterogeneity between hospitals. In this paper, efficiency scores are...

What determines small businesses' recourse to public support measures during the Covid-19 crisis? We analyse this question using a survey of 1,011 self-employed workers and small business owners in Switzerland, linked to information pre-dating the crisis. We find that "objective" measures of...