ABSTRACT
In this paper, we review recent developments in nonparametric estimation of stage occupation probabilities for the three stage irreversible illness-death model. Fractional risk set estimators of the stage occupation probabilities under independent right censoring recently proposed by the authors are discussed. Closed form expressions of the asymptotic standard errors of the proposed estimators are presented which were previously unavailable. Extensions of these estimators to more general multistage model are also considered.
