Lando, David; Medhat, Mamdouh; Nielsen, Mads Stenbo; … - In: Journal of Financial Econometrics 11 (2013) 3, pp. 443-485
We consider additive intensity (Aalen) models as an alternative to the multiplicative intensity (Cox) models for analyzing the default risk of a sample of rated, nonfinancial U.S. firms. The setting allows for estimating and testing the significance of time-varying effects. We use a variety of...