We model the length of time that it takes for a patent application to be granted by the U.S. Patent and Trademark Office, conditional on the patent actually being awarded eventually. Survival analysis is applied and both the nonparametric Kaplan-Meier and parametric accelerated failure time...

We analyze the survival characteristics of recordings that reached the number one spot on the U.S. popular music charts over the period 1955 to 2003. Our results show that there has been a statistically significant change in the time spent at number one since “album cuts” were included in...