Different approaches for modeling grouped survival data: a mango tree study.
Giolo S. R., Colosimo E. A., Demétrio C. G. B.
Author Affiliation: Department of Statistics, Federal University of Parana, 81531-990 Curitiba, Parana, Brazil.
Journal of Agricultural, Biological, and Environmental Statistics 14 : 154-169
Abstract : Interval-censored survival data, in which the event of interest is not observed exactly but is only known to occur within some time interval, occur very frequently. In some situations, event times might be censored into different, possibly overlapping intervals of variable widths; however, in other situations, information is available for all units at the same observed visit time. In the latter cases, interval-censored data are termed grouped survival data. Here we present alternative approaches for analyzing interval-censored data. We illustrate these techniques using a survival data set involving mango tree lifetimes. This study is an example of grouped survival data.