This paper focuses on developing and adapting statistical models of counts (non-negative integers) in the context of panel data and using them to analyze the relationship between patents and R&D expenditures. The model used is an application and generalization of the Poisson distribution to...

This book presents econometric methods for the analysis of event counts. It reviews the recent literature and introduces several new results. While the emphasis is on methods for cross-section data, the modelling of time series and panel count data is discussed as well. Topics include: dependent...

This book presents statistical methods for the analysis of events. The primary focus is on single equation cross section models. The book addresses both the methodology and the practice of the subject and it provides both a synthesis of a diverse body of literature that hitherto was available...